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Update dependency urllib3 to v2 #24

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renovate wants to merge 1 commit from renovate/urllib3-2.x into master

renovate commented

2026-10-27 00:26:42 +00:00

Collaborator

This PR contains the following updates:

Package	Change	Age	Confidence
urllib3 (changelog)	`==1.26.5` → `==2.8.0`

Release Notes

urllib3/urllib3 (urllib3)

Security

Fixed the following security issues:

The TLS configuration for HTTPS proxies could be ignored or overridden.
(High severity, GHSA-8988-9cw3-xx77 <https://github.com/urllib3/urllib3/security/advisories/GHSA-8988-9cw3-xx77>__)
HTTPResponse.stream() and read_chunked() could buffer a chunk-size
line of unbounded length in memory. (High severity,
GHSA-vxq7-64xx-v4gw <https://github.com/urllib3/urllib3/security/advisories/GHSA-vxq7-64xx-v4gw>__)
Chunked Deflate streaming could enter an infinite loop. (Medium severity,
GHSA-gh4c-6fx4-qh6g <https://github.com/urllib3/urllib3/security/advisories/GHSA-gh4c-6fx4-qh6g>__)

.. caution::

urllib3 2.8.0 fixes HTTPS proxy TLS configuration being ignored or
overridden by destination settings. Configurations relying on that
behavior may require changes.

Configure proxy CA certificates and client certificates in
``proxy_ssl_context``, and proxy identity checks with
``proxy_assert_hostname`` or ``proxy_assert_fingerprint``.
Destination client certificates and identity overrides no longer
apply to HTTPS forwarding proxy connections.

Deprecations & Removals

Deprecated using an empty collection as the Retry option
allowed_methods to retry any verb.
(#5044 <https://github.com/urllib3/urllib3/issues/5044>__)

Features

Added Url.auth_decoded and Url.auth_decoded_joined convenience
properties to the result of parse_url().
(#4945 <https://github.com/urllib3/urllib3/issues/4945>__)
Added basic_auth_encoding and proxy_basic_auth_encoding parameters to
urllib3.util.make_headers().
(#5092 <https://github.com/urllib3/urllib3/issues/5092>__)

Bugfixes

Fixed response header handling to replace obsolete folded header lines
(obs-fold) with spaces in accordance with RFC 9112, preventing raw CRLF
sequences from appearing in header values such as Set-Cookie.
(#1362 <https://github.com/urllib3/urllib3/issues/1362>__)
Fixed usage of proxy_ssl_context with ProxyManager when
use_forwarding_for_https=True. Passing ssl_context instead of
proxy_ssl_context for HTTPS proxies in this configuration now emits a
FutureWarning and will raise an error in v3.0.
(#2577 <https://github.com/urllib3/urllib3/issues/2577>__)
Changed behavior of the default ConnectionPool.pool initialization.
LifoQueue is now resolved from the queue module after the
ConnectionPool is instantiated instead of using the default cached
QueueCls class property. This is done because sometimes the
queue.LifoQueue is monkey-patched late in the program, such as by gevent.
(#3289 <https://github.com/urllib3/urllib3/issues/3289>__)
Raised UnrewindableBodyError instead of ValueError when retrying a
request whose body had tell() but not seek().
(#3779 <https://github.com/urllib3/urllib3/issues/3779>__)
Decoded percent-encoded SOCKS proxy credentials before authenticating with
the proxy server.
(#3785 <https://github.com/urllib3/urllib3/issues/3785>__)
Fixed HTTPResponse.drain_conn() to discard unread response data in 64 KiB
chunks (same as the default amt when doing HTTPResponse.stream(...)).
(#5019 <https://github.com/urllib3/urllib3/issues/5019>__)
Fixed is_ipaddress() to detect non-standard IPv4 forms accepted by
socket.connect, such as hex (0x7f000001), octal (0177.0.0.1), and
decimal integers (2130706433), ensuring SSL certificate verification uses
the correct mode for these addresses.
(#5029 <https://github.com/urllib3/urllib3/issues/5029>__)
Fixed HTTPConnectionPool.urlopen raising a misleading FullPoolError
instead of ValueError when called with an invalid timeout argument on
a pool created with block=True.
(#5059 <https://github.com/urllib3/urllib3/issues/5059>__)
Fixed port-zero handling to preserve explicit :0 values instead of
substituting the default ports 80 or 443 in URL parsing, pool selection,
proxy configuration, connection_from_url(), and HTTP/2 request authority.
(#5071 <https://github.com/urllib3/urllib3/issues/5071>,
#5101 <https://github.com/urllib3/urllib3/issues/5101>)
Fixed a bug where PoolManager passed the assert_hostname and
assert_fingerprint parameters to HTTP connection pools.
(#5077 <https://github.com/urllib3/urllib3/issues/5077>__)
Fixed HTTPConnectionPool.urlopen() and HTTP proxy forwarding to strip URL
fragments from absolute request targets before sending requests.
(#5079 <https://github.com/urllib3/urllib3/issues/5079>__)
Added safeguards to the proxy tunneling code to prevent potential security
issues when handling invalid characters in the proxy host and HTTP headers.
This change affects users of Python 3.10, Python 3.11, and Python 3.12 when
the standard library does not contain the fix; those on newer Python versions
should upgrade to 3.13.14+ or 3.14.5+ to get the same security fixes.
(#5091 <https://github.com/urllib3/urllib3/issues/5091>__)
Fixed HTTPSConnection.connect() overriding ProxyConfig.ssl_context's
certificate policy and proxy identity checks with the target connection's TLS
settings when forwarding through an HTTPS proxy.

HTTPSConnection no longer applies target SNI, assertions, or client
credentials to forwarding proxy handshakes and continues to use its
ssl_context as a fallback when an HTTPS proxy forwards an HTTP target.
(#5093 <https://github.com/urllib3/urllib3/issues/5093>__)
Fixed URL parsing to more strictly enforce RFC 3986 host syntax, rejecting
invalid host input such as raw spaces and control characters, malformed
percent-encodings, and percent-encoded control characters in HTTP(S) hosts
and IPv6 zone identifiers, including proxy CONNECT tunnel targets. Host
normalization now also follows RFC 3986 normalization rules for
percent-encoded octets by decoding percent-encoded unreserved characters and
uppercasing the hexadecimal digits of retained percent-encoded octets.
(#5095 <https://github.com/urllib3/urllib3/issues/5095>__)
Fixed an AttributeError on Python built with OpenSSL 4+, where
ssl.PROTOCOL_TLSv1 no longer exists.
(#5097 <https://github.com/urllib3/urllib3/issues/5097>__)
Fixed urllib3.contrib.pyopenssl to use cryptography APIs when reading a
certificate subject and loading encrypted private keys, avoiding
DeprecationWarning raised by pyOpenSSL 26.3.0+.
(#5103 <https://github.com/urllib3/urllib3/issues/5103>__)
Fixed handling of HTTP 303 redirects for requests with chunked or file-like
bodies.
(#5161 <https://github.com/urllib3/urllib3/issues/5161>__)
Fixed assert_fingerprint() to raise SSLError instead of
binascii.Error when a fingerprint has a supported length but contains
non-hexadecimal characters.
(#5211 <https://github.com/urllib3/urllib3/issues/5211>__)

Misc

Added a test dependency group containing the minimum dependencies needed
to run the test suite, intended for downstream packagers. The dev-base
and mypy groups now include this new group via include-group,
removing duplication.
(#3594 <https://github.com/urllib3/urllib3/issues/3594>__)
Fixed test failures with pytest >= 9.1.
(#5094 <https://github.com/urllib3/urllib3/issues/5094>__)
Enabled JSPI tests with Firefox in the Emscripten test suite.
(#5166 <https://github.com/urllib3/urllib3/issues/5166>__)
Improved streamed response decoding performance.
(#5209 <https://github.com/urllib3/urllib3/issues/5209>__)
Fixed flaky tests.
(#5232 <https://github.com/urllib3/urllib3/issues/5232>,
#5234 <https://github.com/urllib3/urllib3/issues/5234>,
#5239 <https://github.com/urllib3/urllib3/issues/5239>__)

Security

Addressed high-severity security issues.
Impact was limited to specific use cases detailed in the accompanying
advisories; overall user exposure was estimated to be marginal.

Decompression-bomb safeguards of the streaming API were bypassed:
1. When HTTPResponse.drain_conn() was called after the response had been
  read and decompressed partially.
2. During the second HTTPResponse.read(amt=N) or
  HTTPResponse.stream(amt=N) call when the response was decompressed
  using the official Brotli <https://pypi.org/project/brotli/>__ library.
See GHSA-mf9v-mfxr-j63j <https://github.com/urllib3/urllib3/security/advisories/GHSA-mf9v-mfxr-j63j>__
for details.
HTTP pools created using ProxyManager.connection_from_url did not strip
sensitive headers specified in Retry.remove_headers_on_redirect when
redirecting to a different host.
(GHSA-qccp-gfcp-xxvc <https://github.com/urllib3/urllib3/security/advisories/GHSA-qccp-gfcp-xxvc>__)

Deprecations and Removals

Used FutureWarning instead of DeprecationWarning for better
visibility of existing deprecation notices. Rescheduled the removal of
deprecated features to version 3.0.
(#3763 <https://github.com/urllib3/urllib3/issues/3763>__)
Removed support for end-of-life Python 3.9.
(#3720 <https://github.com/urllib3/urllib3/issues/3720>__)
Removed support for end-of-life PyPy3.10.
(#4979 <https://github.com/urllib3/urllib3/issues/4979>__)
Bumped the minimum supported pyOpenSSL version to 19.0.0.
(#3777 <https://github.com/urllib3/urllib3/issues/3777>__)

Bugfixes

Fixed a bug where HTTPResponse.read(amt=None) was ignoring decompressed
data buffered from previous partial reads.
(#3636 <https://github.com/urllib3/urllib3/issues/3636>__)
Fixed a bug where HTTPResponse.read() could cache only part of the
response after a partial read when cache_content=True.
(#4967 <https://github.com/urllib3/urllib3/issues/4967>__)
Fixed HTTPResponse.stream() and HTTPResponse.read_chunked() to handle
amt=0.
(#3793 <https://github.com/urllib3/urllib3/issues/3793>__)
Updated _TYPE_BODY type alias to include missing Iterable[str],
matching the documented and runtime behavior of chunked request bodies.
(#3798 <https://github.com/urllib3/urllib3/issues/3798>__)
Fixed LocationParseError when paths resembling schemeless URIs were
passed to HTTPConnectionPool.urlopen().
(#3352 <https://github.com/urllib3/urllib3/issues/3352>__)
Fixed BaseHTTPResponse.readinto() type annotation to accept
memoryview in addition to bytearray, matching the
io.RawIOBase.readinto contract and enabling use with
io.BufferedReader without type errors.
(#3764 <https://github.com/urllib3/urllib3/issues/3764>__)

`v2.6.3`

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Fixed a high-severity security issue where decompression-bomb safeguards of
the streaming API were bypassed when HTTP redirects were followed.
(GHSA-38jv-5279-wg99 <https://github.com/urllib3/urllib3/security/advisories/GHSA-38jv-5279-wg99>__)
Started treating Retry-After times greater than 6 hours as 6 hours by
default. (#3743 <https://github.com/urllib3/urllib3/issues/3743>__)
Fixed urllib3.connection.VerifiedHTTPSConnection on Emscripten.
(#3752 <https://github.com/urllib3/urllib3/issues/3752>__)

`v2.6.2`

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Fixed HTTPResponse.read_chunked() to properly handle leftover data in
the decoder's buffer when reading compressed chunked responses.
(#3734 <https://github.com/urllib3/urllib3/issues/3734>__)

`v2.6.1`

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Restore previously removed HTTPResponse.getheaders() and
HTTPResponse.getheader() methods.
(#3731 <https://github.com/urllib3/urllib3/issues/3731>__)

Security

Fixed a security issue where streaming API could improperly handle highly
compressed HTTP content ("decompression bombs") leading to excessive resource
consumption even when a small amount of data was requested. Reading small
chunks of compressed data is safer and much more efficient now.
(GHSA-2xpw-w6gg-jr37 <https://github.com/urllib3/urllib3/security/advisories/GHSA-2xpw-w6gg-jr37>__)
Fixed a security issue where an attacker could compose an HTTP response with
virtually unlimited links in the Content-Encoding header, potentially
leading to a denial of service (DoS) attack by exhausting system resources
during decoding. The number of allowed chained encodings is now limited to 5.
(GHSA-gm62-xv2j-4w53 <https://github.com/urllib3/urllib3/security/advisories/GHSA-gm62-xv2j-4w53>__)

.. caution::

If urllib3 is not installed with the optional urllib3[brotli] extra, but
your environment contains a Brotli/brotlicffi/brotlipy package anyway, make
sure to upgrade it to at least Brotli 1.2.0 or brotlicffi 1.2.0.0 to
benefit from the security fixes and avoid warnings. Prefer using
urllib3[brotli] to install a compatible Brotli package automatically.
If you use custom decompressors, please make sure to update them to
respect the changed API of urllib3.response.ContentDecoder.

Features

Enabled retrieval, deletion, and membership testing in HTTPHeaderDict using bytes keys. (#3653 <https://github.com/urllib3/urllib3/issues/3653>__)
Added host and port information to string representations of HTTPConnection. (#3666 <https://github.com/urllib3/urllib3/issues/3666>__)
Added support for Python 3.14 free-threading builds explicitly. (#3696 <https://github.com/urllib3/urllib3/issues/3696>__)

Removals

Removed the HTTPResponse.getheaders() method in favor of HTTPResponse.headers.
Removed the HTTPResponse.getheader(name, default) method in favor of HTTPResponse.headers.get(name, default). (#3622 <https://github.com/urllib3/urllib3/issues/3622>__)

Bugfixes

Fixed redirect handling in urllib3.PoolManager when an integer is passed
for the retries parameter. (#3649 <https://github.com/urllib3/urllib3/issues/3649>__)
Fixed HTTPConnectionPool when used in Emscripten with no explicit port. (#3664 <https://github.com/urllib3/urllib3/issues/3664>__)
Fixed handling of SSLKEYLOGFILE with expandable variables. (#3700 <https://github.com/urllib3/urllib3/issues/3700>__)

Misc

Changed the zstd extra to install backports.zstd instead of zstandard on Python 3.13 and before. (#3693 <https://github.com/urllib3/urllib3/issues/3693>__)
Improved the performance of content decoding by optimizing BytesQueueBuffer class. (#3710 <https://github.com/urllib3/urllib3/issues/3710>__)
Allowed building the urllib3 package with newer setuptools-scm v9.x. (#3652 <https://github.com/urllib3/urllib3/issues/3652>__)
Ensured successful urllib3 builds by setting Hatchling requirement to >= 1.27.0. (#3638 <https://github.com/urllib3/urllib3/issues/3638>__)

Features

Added support for the compression.zstd module that is new in Python 3.14.
See PEP 784 <https://peps.python.org/pep-0784/>_ for more information. (#3610 <https://github.com/urllib3/urllib3/issues/3610>__)
Added support for version 0.5 of hatch-vcs (#3612 <https://github.com/urllib3/urllib3/issues/3612>__)

Bugfixes

Fixed a security issue where restricting the maximum number of followed
redirects at the urllib3.PoolManager level via the retries parameter
did not work.
Made the Node.js runtime respect redirect parameters such as retries
and redirects.
Raised exception for HTTPResponse.shutdown on a connection already released to the pool. (#3581 <https://github.com/urllib3/urllib3/issues/3581>__)
Fixed incorrect CONNECT statement when using an IPv6 proxy with connection_from_host. Previously would not be wrapped in []. (#3615 <https://github.com/urllib3/urllib3/issues/3615>__)

Features

Applied PEP 639 by specifying the license fields in pyproject.toml. (#3522 <https://github.com/urllib3/urllib3/issues/3522>__)
Updated exceptions to save and restore more properties during the pickle/serialization process. (#3567 <https://github.com/urllib3/urllib3/issues/3567>__)
Added verify_flags option to create_urllib3_context with a default of VERIFY_X509_PARTIAL_CHAIN and VERIFY_X509_STRICT for Python 3.13+. (#3571 <https://github.com/urllib3/urllib3/issues/3571>__)

Bugfixes

Fixed a bug with partial reads of streaming data in Emscripten. (#3555 <https://github.com/urllib3/urllib3/issues/3555>__)

Misc

Switched to uv for installing development dependecies. (#3550 <https://github.com/urllib3/urllib3/issues/3550>__)
Removed the multiple.intoto.jsonl asset from GitHub releases. Attestation of release files since v2.3.0 can be found on PyPI. (#3566 <https://github.com/urllib3/urllib3/issues/3566>__)

Features

Applied PEP 639 by specifying the license fields in pyproject.toml. (#3522 <https://github.com/urllib3/urllib3/issues/3522>__)
Updated exceptions to save and restore more properties during the pickle/serialization process. (#3567 <https://github.com/urllib3/urllib3/issues/3567>__)
Added verify_flags option to create_urllib3_context with a default of VERIFY_X509_PARTIAL_CHAIN and VERIFY_X509_STRICT for Python 3.13+. (#3571 <https://github.com/urllib3/urllib3/issues/3571>__)

Bugfixes

Fixed a bug with partial reads of streaming data in Emscripten. (#3555 <https://github.com/urllib3/urllib3/issues/3555>__)

Misc

Switched to uv for installing development dependecies. (#3550 <https://github.com/urllib3/urllib3/issues/3550>__)
Removed the multiple.intoto.jsonl asset from GitHub releases. Attestation of release files since v2.3.0 can be found on PyPI. (#3566 <https://github.com/urllib3/urllib3/issues/3566>__)

Features

Added support for Python 3.13. (#3473 <https://github.com/urllib3/urllib3/issues/3473>__)

Bugfixes

Fixed the default encoding of chunked request bodies to be UTF-8 instead of ISO-8859-1.
All other methods of supplying a request body already use UTF-8 starting in urllib3 v2.0. (#3053 <https://github.com/urllib3/urllib3/issues/3053>__)
Fixed ResourceWarning on CONNECT with Python < 3.11.4 by backporting python/cpython#103472. (#3252 <https://github.com/urllib3/urllib3/issues/3252>__)
Adjust tolerance for floating-point comparison on Windows to avoid flakiness in CI (#3413 <https://github.com/urllib3/urllib3/issues/3413>__)
Fixed a crash where certain standard library hash functions were absent in restricted environments. (#3432 <https://github.com/urllib3/urllib3/issues/3432>__)
Fixed mypy error when adding to HTTPConnection.default_socket_options. (#3448 <https://github.com/urllib3/urllib3/issues/3448>__)

HTTP/2 (experimental)

HTTP/2 support is still in early development.

Excluded Transfer-Encoding: chunked from HTTP/2 request body (#3425 <https://github.com/urllib3/urllib3/issues/3425>__)
Added version checking for h2 (https://pypi.org/project/h2/) usage.

Now only accepting supported h2 major version 4.x.x. (#3290 <https://github.com/urllib3/urllib3/issues/3290>__)
Added a probing mechanism for determining whether a given target origin
supports HTTP/2 via ALPN. (#3301 <https://github.com/urllib3/urllib3/issues/3301>__)
Add support for sending a request body with HTTP/2 (#3302 <https://github.com/urllib3/urllib3/issues/3302>__)

Deprecations and Removals

Note for downstream distributors: the _version.py file has been removed and is now created at build time by hatch-vcs. (#3412 <https://github.com/urllib3/urllib3/issues/3412>__)
Drop support for end-of-life PyPy3.8 and PyPy3.9. (#3475 <https://github.com/urllib3/urllib3/issues/3475>__)

`v2.2.2`

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Added the Proxy-Authorization header to the list of headers to strip from requests when redirecting to a different host. As before, different headers can be set via Retry.remove_headers_on_redirect.
Allowed passing negative integers as amt to read methods of http.client.HTTPResponse as an alternative to None. (#3122 <https://github.com/urllib3/urllib3/issues/3122>__)
Fixed return types representing copying actions to use typing.Self. (#3363 <https://github.com/urllib3/urllib3/issues/3363>__)

`v2.2.1`

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Fixed issue where InsecureRequestWarning was emitted for HTTPS connections when using Emscripten. (#3331 <https://github.com/urllib3/urllib3/issues/3331>__)
Fixed HTTPConnectionPool.urlopen to stop automatically casting non-proxy headers to HTTPHeaderDict. This change was premature as it did not apply to proxy headers and HTTPHeaderDict does not handle byte header values correctly yet. (#3343 <https://github.com/urllib3/urllib3/issues/3343>__)
Changed InvalidChunkLength to ProtocolError when response terminates before the chunk length is sent. (#2860 <https://github.com/urllib3/urllib3/issues/2860>__)
Changed ProtocolError to be more verbose on incomplete reads with excess content. (#3261 <https://github.com/urllib3/urllib3/issues/3261>__)

`v2.2.0`

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Added support for Emscripten and Pyodide <https://urllib3.readthedocs.io/en/latest/reference/contrib/emscripten.html>, including streaming support in cross-origin isolated browser environments where threading is enabled. (#2951 <https://github.com/urllib3/urllib3/issues/2951>)
Added support for HTTPResponse.read1() method. (#3186 <https://github.com/urllib3/urllib3/issues/3186>__)
Added rudimentary support for HTTP/2. (#3284 <https://github.com/urllib3/urllib3/issues/3284>__)
Fixed issue where requests against urls with trailing dots were failing due to SSL errors
when using proxy. (#2244 <https://github.com/urllib3/urllib3/issues/2244>__)
Fixed HTTPConnection.proxy_is_verified and HTTPSConnection.proxy_is_verified
to be always set to a boolean after connecting to a proxy. It could be
None in some cases previously. (#3130 <https://github.com/urllib3/urllib3/issues/3130>__)
Fixed an issue where headers passed in a request with json= would be mutated (#3203 <https://github.com/urllib3/urllib3/issues/3203>__)
Fixed HTTPSConnection.is_verified to be set to False when connecting
from a HTTPS proxy to an HTTP target. It was set to True previously. (#3267 <https://github.com/urllib3/urllib3/issues/3267>__)
Fixed handling of new error message from OpenSSL 3.2.0 when configuring an HTTP proxy as HTTPS (#3268 <https://github.com/urllib3/urllib3/issues/3268>__)
Fixed TLS 1.3 post-handshake auth when the server certificate validation is disabled (#3325 <https://github.com/urllib3/urllib3/issues/3325>__)
Note for downstream distributors: To run integration tests, you now need to run the tests a second
time with the --integration pytest flag. (#3181 <https://github.com/urllib3/urllib3/issues/3181>__)

`v2.1.0`

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Removed support for the deprecated urllib3[secure] extra. (#2680 <https://github.com/urllib3/urllib3/issues/2680>__)
Removed support for the deprecated SecureTransport TLS implementation. (#2681 <https://github.com/urllib3/urllib3/issues/2681>__)
Removed support for the end-of-life Python 3.7. (#3143 <https://github.com/urllib3/urllib3/issues/3143>__)
Allowed loading CA certificates from memory for proxies. (#3065 <https://github.com/urllib3/urllib3/issues/3065>__)
Fixed decoding Gzip-encoded responses which specified x-gzip content-encoding. (#3174 <https://github.com/urllib3/urllib3/issues/3174>__)

`v2.0.7`

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Made body stripped from HTTP requests changing the request method to GET after HTTP 303 "See Other" redirect responses.

`v2.0.6`

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Added the Cookie header to the list of headers to strip from requests when redirecting to a different host. As before, different headers can be set via Retry.remove_headers_on_redirect.

`v2.0.5`

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Allowed pyOpenSSL third-party module without any deprecation warning. (#3126 <https://github.com/urllib3/urllib3/issues/3126>__)
Fixed default blocksize of HTTPConnection classes to match high-level classes. Previously was 8KiB, now 16KiB. (#3066 <https://github.com/urllib3/urllib3/issues/3066>__)

`v2.0.4`

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Added support for union operators to HTTPHeaderDict (#2254 <https://github.com/urllib3/urllib3/issues/2254>__)
Added BaseHTTPResponse to urllib3.__all__ (#3078 <https://github.com/urllib3/urllib3/issues/3078>__)
Fixed urllib3.connection.HTTPConnection to raise the http.client.connect audit event to have the same behavior as the standard library HTTP client (#2757 <https://github.com/urllib3/urllib3/issues/2757>__)
Relied on the standard library for checking hostnames in supported PyPy releases (#3087 <https://github.com/urllib3/urllib3/issues/3087>__)

`v2.0.3`

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Allowed alternative SSL libraries such as LibreSSL, while still issuing a warning as we cannot help users facing issues with implementations other than OpenSSL. (#3020 <https://github.com/urllib3/urllib3/issues/3020>__)
Deprecated URLs which don't have an explicit scheme (#2950 <https://github.com/urllib3/urllib3/pull/2950>_)
Fixed response decoding with Zstandard when compressed data is made of several frames. (#3008 <https://github.com/urllib3/urllib3/issues/3008>__)
Fixed assert_hostname=False to correctly skip hostname check. (#3051 <https://github.com/urllib3/urllib3/issues/3051>__)

`v2.0.2`

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Fixed HTTPResponse.stream() to continue yielding bytes if buffered decompressed data
was still available to be read even if the underlying socket is closed. This prevents
a compressed response from being truncated. (#3009 <https://github.com/urllib3/urllib3/issues/3009>__)

`v2.0.1`

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==================

Fixed a socket leak when fingerprint or hostname verifications fail. (#2991 <https://github.com/urllib3/urllib3/issues/2991>__)
Fixed an error when HTTPResponse.read(0) was the first read call or when the internal response body buffer was otherwise empty. (#2998 <https://github.com/urllib3/urllib3/issues/2998>__)

`v2.0.0`

Compare Source

==================

Read the v2.0 migration guide <https://urllib3.readthedocs.io/en/latest/v2-migration-guide.html>__ for help upgrading to the latest version of urllib3.

Removed

Removed support for Python 2.7, 3.5, and 3.6 (#883 <https://github.com/urllib3/urllib3/issues/883>, #2336 <https://github.com/urllib3/urllib3/issues/2336>).
Removed fallback on certificate commonName in match_hostname() function.
This behavior was deprecated in May 2000 in RFC 2818. Instead only subjectAltName
is used to verify the hostname by default. To enable verifying the hostname against
commonName use SSLContext.hostname_checks_common_name = True (#2113 <https://github.com/urllib3/urllib3/issues/2113>__).
Removed support for Python with an ssl module compiled with LibreSSL, CiscoSSL,
wolfSSL, and all other OpenSSL alternatives. Python is moving to require OpenSSL with PEP 644 (#2168 <https://github.com/urllib3/urllib3/issues/2168>__).
Removed support for OpenSSL versions earlier than 1.1.1 or that don't have SNI support.
When an incompatible OpenSSL version is detected an ImportError is raised (#2168 <https://github.com/urllib3/urllib3/issues/2168>__).
Removed the list of default ciphers for OpenSSL 1.1.1+ and SecureTransport as their own defaults are already secure (#2082 <https://github.com/urllib3/urllib3/issues/2082>__).
Removed urllib3.contrib.appengine.AppEngineManager and support for Google App Engine Standard Environment (#2044 <https://github.com/urllib3/urllib3/issues/2044>__).
Removed deprecated Retry options method_whitelist, DEFAULT_REDIRECT_HEADERS_BLACKLIST (#2086 <https://github.com/urllib3/urllib3/issues/2086>__).
Removed urllib3.HTTPResponse.from_httplib (#2648 <https://github.com/urllib3/urllib3/issues/2648>__).
Removed default value of None for the request_context parameter of urllib3.PoolManager.connection_from_pool_key. This change should have no effect on users as the default value of None was an invalid option and was never used (#1897 <https://github.com/urllib3/urllib3/issues/1897>__).
Removed the urllib3.request module. urllib3.request.RequestMethods has been made a private API.
This change was made to ensure that from urllib3 import request imported the top-level request()
function instead of the urllib3.request module (#2269 <https://github.com/urllib3/urllib3/issues/2269>__).
Removed support for SSLv3.0 from the urllib3.contrib.pyopenssl even when support is available from the compiled OpenSSL library (#2233 <https://github.com/urllib3/urllib3/issues/2233>__).
Removed the deprecated urllib3.contrib.ntlmpool module (#2339 <https://github.com/urllib3/urllib3/issues/2339>__).
Removed DEFAULT_CIPHERS, HAS_SNI, USE_DEFAULT_SSLCONTEXT_CIPHERS, from the private module urllib3.util.ssl_ (#2168 <https://github.com/urllib3/urllib3/issues/2168>__).
Removed urllib3.exceptions.SNIMissingWarning (#2168 <https://github.com/urllib3/urllib3/issues/2168>__).
Removed the _prepare_conn method from HTTPConnectionPool. Previously this was only used to call HTTPSConnection.set_cert() by HTTPSConnectionPool (#1985 <https://github.com/urllib3/urllib3/issues/1985>__).
Removed tls_in_tls_required property from HTTPSConnection. This is now determined from the scheme parameter in HTTPConnection.set_tunnel() (#1985 <https://github.com/urllib3/urllib3/issues/1985>__).
Removed the strict parameter/attribute from HTTPConnection, HTTPSConnection, HTTPConnectionPool, HTTPSConnectionPool, and HTTPResponse (#2064 <https://github.com/urllib3/urllib3/issues/2064>__).

Deprecated

Deprecated HTTPResponse.getheaders() and HTTPResponse.getheader() which will be removed in urllib3 v2.1.0. Instead use HTTPResponse.headers and HTTPResponse.headers.get(name, default). (#1543 <https://github.com/urllib3/urllib3/issues/1543>, #2814 <https://github.com/urllib3/urllib3/issues/2814>).
Deprecated urllib3.contrib.pyopenssl module which will be removed in urllib3 v2.1.0 (#2691 <https://github.com/urllib3/urllib3/issues/2691>__).
Deprecated urllib3.contrib.securetransport module which will be removed in urllib3 v2.1.0 (#2692 <https://github.com/urllib3/urllib3/issues/2692>__).
Deprecated ssl_version option in favor of ssl_minimum_version. ssl_version will be removed in urllib3 v2.1.0 (#2110 <https://github.com/urllib3/urllib3/issues/2110>__).
Deprecated the strict parameter of PoolManager.connection_from_context() as it's not longer needed in Python 3.x. It will be removed in urllib3 v2.1.0 (#2267 <https://github.com/urllib3/urllib3/issues/2267>__)
Deprecated the NewConnectionError.pool attribute which will be removed in urllib3 v2.1.0 (#2271 <https://github.com/urllib3/urllib3/issues/2271>__).
Deprecated format_header_param_html5 and format_header_param in favor of format_multipart_header_param (#2257 <https://github.com/urllib3/urllib3/issues/2257>__).
Deprecated RequestField.header_formatter parameter which will be removed in urllib3 v2.1.0 (#2257 <https://github.com/urllib3/urllib3/issues/2257>__).
Deprecated HTTPSConnection.set_cert() method. Instead pass parameters to the HTTPSConnection constructor (#1985 <https://github.com/urllib3/urllib3/issues/1985>__).
Deprecated HTTPConnection.request_chunked() method which will be removed in urllib3 v2.1.0. Instead pass chunked=True to HTTPConnection.request() (#1985 <https://github.com/urllib3/urllib3/issues/1985>__).

Added

Added top-level urllib3.request function which uses a preconfigured module-global PoolManager instance (#2150 <https://github.com/urllib3/urllib3/issues/2150>__).
Added the json parameter to urllib3.request(), PoolManager.request(), and ConnectionPool.request() methods to send JSON bodies in requests. Using this parameter will set the header Content-Type: application/json if Content-Type isn't already defined.
Added support for parsing JSON response bodies with HTTPResponse.json() method (#2243 <https://github.com/urllib3/urllib3/issues/2243>__).
Added type hints to the urllib3 module (#1897 <https://github.com/urllib3/urllib3/issues/1897>__).
Added ssl_minimum_version and ssl_maximum_version options which set
SSLContext.minimum_version and SSLContext.maximum_version (#2110 <https://github.com/urllib3/urllib3/issues/2110>__).
Added support for Zstandard (RFC 8878) when zstandard 1.18.0 or later is installed.
Added the zstd extra which installs the zstandard package (#1992 <https://github.com/urllib3/urllib3/issues/1992>__).
Added urllib3.response.BaseHTTPResponse class. All future response classes will be subclasses of BaseHTTPResponse (#2083 <https://github.com/urllib3/urllib3/issues/2083>__).
Added FullPoolError which is raised when PoolManager(block=True) and a connection is returned to a full pool (#2197 <https://github.com/urllib3/urllib3/issues/2197>__).
Added HTTPHeaderDict to the top-level urllib3 namespace (#2216 <https://github.com/urllib3/urllib3/issues/2216>__).
Added support for configuring header merging behavior with HTTPHeaderDict
When using a HTTPHeaderDict to provide headers for a request, by default duplicate
header values will be repeated. But if combine=True is passed into a call to
HTTPHeaderDict.add, then the added header value will be merged in with an existing
value into a comma-separated list (X-My-Header: foo, bar) (#2242 <https://github.com/urllib3/urllib3/issues/2242>__).
Added NameResolutionError exception when a DNS error occurs (#2305 <https://github.com/urllib3/urllib3/issues/2305>__).
Added proxy_assert_hostname and proxy_assert_fingerprint kwargs to ProxyManager (#2409 <https://github.com/urllib3/urllib3/issues/2409>__).
Added a configurable backoff_max parameter to the Retry class.
If a custom backoff_max is provided to the Retry class, it
will replace the Retry.DEFAULT_BACKOFF_MAX (#2494 <https://github.com/urllib3/urllib3/issues/2494>__).
Added the authority property to the Url class as per RFC 3986 3.2. This property should be used in place of netloc for users who want to include the userinfo (auth) component of the URI (#2520 <https://github.com/urllib3/urllib3/issues/2520>__).
Added the scheme parameter to HTTPConnection.set_tunnel to configure the scheme of the origin being tunnelled to (#1985 <https://github.com/urllib3/urllib3/issues/1985>__).
Added the is_closed, is_connected and has_connected_to_proxy properties to HTTPConnection (#1985 <https://github.com/urllib3/urllib3/issues/1985>__).
Added optional backoff_jitter parameter to Retry. (#2952 <https://github.com/urllib3/urllib3/issues/2952>__)

Changed

Changed urllib3.response.HTTPResponse.read to respect the semantics of io.BufferedIOBase regardless of compression. Specifically, this method:
- Only returns an empty bytes object to indicate EOF (that is, the response has been fully consumed).
- Never returns more bytes than requested.
- Can issue any number of system calls: zero, one or multiple.
If you want each urllib3.response.HTTPResponse.read call to issue a single system call, you need to disable decompression by setting decode_content=False (#2128 <https://github.com/urllib3/urllib3/issues/2128>__).
Changed urllib3.HTTPConnection.getresponse to return an instance of urllib3.HTTPResponse instead of http.client.HTTPResponse (#2648 <https://github.com/urllib3/urllib3/issues/2648>__).
Changed ssl_version to instead set the corresponding SSLContext.minimum_version
and SSLContext.maximum_version values. Regardless of ssl_version passed
SSLContext objects are now constructed using ssl.PROTOCOL_TLS_CLIENT (#2110 <https://github.com/urllib3/urllib3/issues/2110>__).
Changed default SSLContext.minimum_version to be TLSVersion.TLSv1_2 in line with Python 3.10 (#2373 <https://github.com/urllib3/urllib3/issues/2373>__).
Changed ProxyError to wrap any connection error (timeout, TLS, DNS) that occurs when connecting to the proxy (#2482 <https://github.com/urllib3/urllib3/pull/2482>__).
Changed urllib3.util.create_urllib3_context to not override the system cipher suites with
a default value. The new default will be cipher suites configured by the operating system (#2168 <https://github.com/urllib3/urllib3/issues/2168>__).
Changed multipart/form-data header parameter formatting matches the WHATWG HTML Standard as of 2021-06-10. Control characters in filenames are no longer percent encoded (#2257 <https://github.com/urllib3/urllib3/issues/2257>__).
Changed the error raised when connecting via HTTPS when the ssl module isn't available from SSLError to ImportError (#2589 <https://github.com/urllib3/urllib3/issues/2589>__).
Changed HTTPConnection.request() to always use lowercase chunk boundaries when sending requests with Transfer-Encoding: chunked (#2515 <https://github.com/urllib3/urllib3/issues/2515>__).
Changed enforce_content_length default to True, preventing silent data loss when reading streamed responses (#2514 <https://github.com/urllib3/urllib3/issues/2514>__).
Changed internal implementation of HTTPHeaderDict to use dict instead of collections.OrderedDict for better performance (#2080 <https://github.com/urllib3/urllib3/issues/2080>__).
Changed the urllib3.contrib.pyopenssl module to wrap OpenSSL.SSL.Error with ssl.SSLError in PyOpenSSLContext.load_cert_chain (#2628 <https://github.com/urllib3/urllib3/issues/2628>__).
Changed usage of the deprecated socket.error to OSError (#2120 <https://github.com/urllib3/urllib3/issues/2120>__).
Changed all parameters in the HTTPConnection and HTTPSConnection constructors to be keyword-only except host and port (#1985 <https://github.com/urllib3/urllib3/issues/1985>__).
Changed HTTPConnection.getresponse() to set the socket timeout from HTTPConnection.timeout value before reading
data from the socket. This previously was done manually by the HTTPConnectionPool calling HTTPConnection.sock.settimeout(...) (#1985 <https://github.com/urllib3/urllib3/issues/1985>__).
Changed the _proxy_host property to _tunnel_host in HTTPConnectionPool to more closely match how the property is used (value in HTTPConnection.set_tunnel()) (#1985 <https://github.com/urllib3/urllib3/issues/1985>__).
Changed name of Retry.BACK0FF_MAX to be Retry.DEFAULT_BACKOFF_MAX.
Changed TLS handshakes to use SSLContext.check_hostname when possible (#2452 <https://github.com/urllib3/urllib3/pull/2452>__).
Changed server_hostname to behave like other parameters only used by HTTPSConnectionPool (#2537 <https://github.com/urllib3/urllib3/pull/2537>__).
Changed the default blocksize to 16KB to match OpenSSL's default read amounts (#2348 <https://github.com/urllib3/urllib3/pull/2348>__).
Changed HTTPResponse.read() to raise an error when calling with decode_content=False after using decode_content=True to prevent data loss (#2800 <https://github.com/urllib3/urllib3/issues/2800>__).

Fixed

Fixed thread-safety issue where accessing a PoolManager with many distinct origins would cause connection pools to be closed while requests are in progress (#1252 <https://github.com/urllib3/urllib3/issues/1252>__).
Fixed an issue where an HTTPConnection instance would erroneously reuse the socket read timeout value from reading the previous response instead of a newly configured connect timeout.
Instead now if HTTPConnection.timeout is updated before sending the next request the new timeout value will be used (#2645 <https://github.com/urllib3/urllib3/issues/2645>__).
Fixed socket.error.errno when raised from pyOpenSSL's OpenSSL.SSL.SysCallError (#2118 <https://github.com/urllib3/urllib3/issues/2118>__).
Fixed the default value of HTTPSConnection.socket_options to match HTTPConnection (#2213 <https://github.com/urllib3/urllib3/issues/2213>__).
Fixed a bug where headers would be modified by the remove_headers_on_redirect feature (#2272 <https://github.com/urllib3/urllib3/issues/2272>__).
Fixed a reference cycle bug in urllib3.util.connection.create_connection() (#2277 <https://github.com/urllib3/urllib3/issues/2277>__).
Fixed a socket leak if HTTPConnection.connect() fails (#2571 <https://github.com/urllib3/urllib3/pull/2571>__).
Fixed urllib3.contrib.pyopenssl.WrappedSocket and urllib3.contrib.securetransport.WrappedSocket close methods (#2970 <https://github.com/urllib3/urllib3/issues/2970>__)

`v1.26.20`

Compare Source

====================

Fixed a crash where certain standard library hash functions were absent in
FIPS-compliant environments.
(#3432 <https://github.com/urllib3/urllib3/issues/3432>__)
Replaced deprecated dash-separated setuptools entries in setup.cfg.
(#3461 <https://github.com/urllib3/urllib3/pull/3461>__)
Took into account macOS setting ECONNRESET instead of EPROTOTYPE in
its newer versions.
(#3416 <https://github.com/urllib3/urllib3/pull/3416>__)
Backported changes to our tests and CI configuration from v2.x to support
testing with CPython 3.12 and 3.13.
(#3436 <https://github.com/urllib3/urllib3/pull/3436>__)

`v1.26.19`

Compare Source

====================

Added the Proxy-Authorization header to the list of headers to strip from requests when redirecting to a different host. As before, different headers can be set via Retry.remove_headers_on_redirect.
Fixed handling of OpenSSL 3.2.0 new error message for misconfiguring an HTTP proxy as HTTPS. (#3405 <https://github.com/urllib3/urllib3/issues/3405>__)

`v1.26.18`

Compare Source

====================

Made body stripped from HTTP requests changing the request method to GET after HTTP 303 "See Other" redirect responses.

`v1.26.17`

Compare Source

====================

Added the Cookie header to the list of headers to strip from requests when redirecting to a different host. As before, different headers can be set via Retry.remove_headers_on_redirect. (#3139 <https://github.com/urllib3/urllib3/pull/3139>_)

`v1.26.16`

Compare Source

====================

Fixed thread-safety issue where accessing a PoolManager with many distinct origins
would cause connection pools to be closed while requests are in progress (#2954 <https://github.com/urllib3/urllib3/pull/2954>_)

`v1.26.15`

Compare Source

====================

Fix socket timeout value when HTTPConnection is reused (#2645 <https://github.com/urllib3/urllib3/issues/2645>__)
Remove "!" character from the unreserved characters in IPv6 Zone ID parsing
(#2899 <https://github.com/urllib3/urllib3/issues/2899>__)
Fix IDNA handling of '\x80' byte (#2901 <https://github.com/urllib3/urllib3/issues/2901>__)

`v1.26.14`

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====================

Fixed parsing of port 0 (zero) returning None, instead of 0. (#2850 <https://github.com/urllib3/urllib3/issues/2850>__)
Removed deprecated getheaders() calls in contrib module. Fixed the type hint of PoolKey.key_retries by adding bool to the union. (#2865 <https://github.com/urllib3/urllib3/issues/2865>__)

`v1.26.13`

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====================

Deprecated the HTTPResponse.getheaders() and HTTPResponse.getheader() methods.
Fixed an issue where parsing a URL with leading zeroes in the port would be rejected
even when the port number after removing the zeroes was valid.
Fixed a deprecation warning when using cryptography v39.0.0.
Removed the <4 in the Requires-Python packaging metadata field.

`v1.26.12`

Compare Source

====================

Deprecated the urllib3[secure] extra and the urllib3.contrib.pyopenssl module.
Both will be removed in v2.x. See this GitHub issue <https://github.com/urllib3/urllib3/issues/2680>_
for justification and info on how to migrate.

`v1.26.11`

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====================

Fixed an issue where reading more than 2 GiB in a call to HTTPResponse.read would
raise an OverflowError on Python 3.9 and earlier.

`v1.26.10`

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====================

Removed support for Python 3.5
Fixed an issue where a ProxyError recommending configuring the proxy as HTTP
instead of HTTPS could appear even when an HTTPS proxy wasn't configured.

`v1.26.9`

Compare Source

===================

Changed urllib3[brotli] extra to favor installing Brotli libraries that are still
receiving updates like brotli and brotlicffi instead of brotlipy.
This change does not impact behavior of urllib3, only which dependencies are installed.
Fixed a socket leaking when HTTPSConnection.connect() raises an exception.
Fixed server_hostname being forwarded from PoolManager to HTTPConnectionPool
when requesting an HTTP URL. Should only be forwarded when requesting an HTTPS URL.

`v1.26.8`

Compare Source

===================

Added extra message to urllib3.exceptions.ProxyError when urllib3 detects that
a proxy is configured to use HTTPS but the proxy itself appears to only use HTTP.
Added a mention of the size of the connection pool when discarding a connection due to the pool being full.
Added explicit support for Python 3.11.
Deprecated the Retry.MAX_BACKOFF class property in favor of Retry.DEFAULT_MAX_BACKOFF
to better match the rest of the default parameter names. Retry.MAX_BACKOFF is removed in v2.0.
Changed location of the vendored ssl.match_hostname function from urllib3.packages.ssl_match_hostname
to urllib3.util.ssl_match_hostname to ensure Python 3.10+ compatibility after being repackaged
by downstream distributors.
Fixed absolute imports, all imports are now relative.

`v1.26.7`

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===================

Fixed a bug with HTTPS hostname verification involving IP addresses and lack
of SNI. (Issue #2400)
Fixed a bug where IPv6 braces weren't stripped during certificate hostname
matching. (Issue #2240)

`v1.26.6`

Compare Source

===================

Deprecated the urllib3.contrib.ntlmpool module. urllib3 is not able to support
it properly due to reasons listed in this issue <https://github.com/urllib3/urllib3/issues/2282>_.
If you are a user of this module please leave a comment.
Changed HTTPConnection.request_chunked() to not erroneously emit multiple
Transfer-Encoding headers in the case that one is already specified.
Fixed typo in deprecation message to recommend Retry.DEFAULT_ALLOWED_METHODS.

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This PR contains the following updates: | Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) | |---|---|---|---| | [urllib3](https://github.com/urllib3/urllib3) ([changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)) | `==1.26.5` → `==2.8.0` | ![age](https://developer.mend.io/api/mc/badges/age/pypi/urllib3/2.8.0?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/urllib3/1.26.5/2.8.0?slim=true) | --- ### Release Notes <details> <summary>urllib3/urllib3 (urllib3)</summary> ### [`v2.8.0`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#280-2026-09-15) [Compare Source](https://github.com/urllib3/urllib3/compare/2.7.0...2.8.0) \================== ## Security Fixed the following security issues: - The TLS configuration for HTTPS proxies could be ignored or overridden. (High severity, `GHSA-8988-9cw3-xx77 <https://github.com/urllib3/urllib3/security/advisories/GHSA-8988-9cw3-xx77>`\_\_) - `HTTPResponse.stream()` and `read_chunked()` could buffer a chunk-size line of unbounded length in memory. (High severity, `GHSA-vxq7-64xx-v4gw <https://github.com/urllib3/urllib3/security/advisories/GHSA-vxq7-64xx-v4gw>`\_\_) - Chunked Deflate streaming could enter an infinite loop. (Medium severity, `GHSA-gh4c-6fx4-qh6g <https://github.com/urllib3/urllib3/security/advisories/GHSA-gh4c-6fx4-qh6g>`\_\_) .. caution:: ``` urllib3 2.8.0 fixes HTTPS proxy TLS configuration being ignored or overridden by destination settings. Configurations relying on that behavior may require changes. Configure proxy CA certificates and client certificates in ``proxy_ssl_context``, and proxy identity checks with ``proxy_assert_hostname`` or ``proxy_assert_fingerprint``. Destination client certificates and identity overrides no longer apply to HTTPS forwarding proxy connections. ``` ## Deprecations & Removals - Deprecated using an empty collection as the `Retry` option `allowed_methods` to retry any verb. (`#5044 <https://github.com/urllib3/urllib3/issues/5044>`\_\_) ## Features - Added `Url.auth_decoded` and `Url.auth_decoded_joined` convenience properties to the result of `parse_url()`. (`#4945 <https://github.com/urllib3/urllib3/issues/4945>`\_\_) - Added `basic_auth_encoding` and `proxy_basic_auth_encoding` parameters to `urllib3.util.make_headers()`. (`#5092 <https://github.com/urllib3/urllib3/issues/5092>`\_\_) ## Bugfixes - Fixed response header handling to replace obsolete folded header lines (`obs-fold`) with spaces in accordance with RFC 9112, preventing raw CRLF sequences from appearing in header values such as `Set-Cookie`. (`#1362 <https://github.com/urllib3/urllib3/issues/1362>`\_\_) - Fixed usage of `proxy_ssl_context` with `ProxyManager` when `use_forwarding_for_https=True`. Passing `ssl_context` instead of `proxy_ssl_context` for HTTPS proxies in this configuration now emits a `FutureWarning` and will raise an error in v3.0. (`#2577 <https://github.com/urllib3/urllib3/issues/2577>`\_\_) - Changed behavior of the default `ConnectionPool.pool` initialization. `LifoQueue` is now resolved from the `queue` module after the `ConnectionPool` is instantiated instead of using the default cached `QueueCls` class property. This is done because sometimes the `queue.LifoQueue` is monkey-patched late in the program, such as by gevent. (`#3289 <https://github.com/urllib3/urllib3/issues/3289>`\_\_) - Raised `UnrewindableBodyError` instead of `ValueError` when retrying a request whose body had `tell()` but not `seek()`. (`#3779 <https://github.com/urllib3/urllib3/issues/3779>`\_\_) - Decoded percent-encoded SOCKS proxy credentials before authenticating with the proxy server. (`#3785 <https://github.com/urllib3/urllib3/issues/3785>`\_\_) - Fixed `HTTPResponse.drain_conn()` to discard unread response data in 64 KiB chunks (same as the default `amt` when doing `HTTPResponse.stream(...)`). (`#5019 <https://github.com/urllib3/urllib3/issues/5019>`\_\_) - Fixed `is_ipaddress()` to detect non-standard IPv4 forms accepted by `socket.connect`, such as hex (`0x7f000001`), octal (`0177.0.0.1`), and decimal integers (`2130706433`), ensuring SSL certificate verification uses the correct mode for these addresses. (`#5029 <https://github.com/urllib3/urllib3/issues/5029>`\_\_) - Fixed `HTTPConnectionPool.urlopen` raising a misleading `FullPoolError` instead of `ValueError` when called with an invalid `timeout` argument on a pool created with `block=True`. (`#5059 <https://github.com/urllib3/urllib3/issues/5059>`\_\_) - Fixed port-zero handling to preserve explicit `:0` values instead of substituting the default ports 80 or 443 in URL parsing, pool selection, proxy configuration, `connection_from_url()`, and HTTP/2 request authority. (`#5071 <https://github.com/urllib3/urllib3/issues/5071>`**, `#5101 <https://github.com/urllib3/urllib3/issues/5101>`**) - Fixed a bug where `PoolManager` passed the `assert_hostname` and `assert_fingerprint` parameters to HTTP connection pools. (`#5077 <https://github.com/urllib3/urllib3/issues/5077>`\_\_) - Fixed `HTTPConnectionPool.urlopen()` and HTTP proxy forwarding to strip URL fragments from absolute request targets before sending requests. (`#5079 <https://github.com/urllib3/urllib3/issues/5079>`\_\_) - Added safeguards to the proxy tunneling code to prevent potential security issues when handling invalid characters in the proxy host and HTTP headers. This change affects users of Python 3.10, Python 3.11, and Python 3.12 when the standard library does not contain the fix; those on newer Python versions should upgrade to 3.13.14+ or 3.14.5+ to get the same security fixes. (`#5091 <https://github.com/urllib3/urllib3/issues/5091>`\_\_) - Fixed `HTTPSConnection.connect()` overriding `ProxyConfig.ssl_context`'s certificate policy and proxy identity checks with the target connection's TLS settings when forwarding through an HTTPS proxy. `HTTPSConnection` no longer applies target SNI, assertions, or client credentials to forwarding proxy handshakes and continues to use its `ssl_context` as a fallback when an HTTPS proxy forwards an HTTP target. (`#5093 <https://github.com/urllib3/urllib3/issues/5093>`\_\_) - Fixed URL parsing to more strictly enforce RFC 3986 host syntax, rejecting invalid host input such as raw spaces and control characters, malformed percent-encodings, and percent-encoded control characters in HTTP(S) hosts and IPv6 zone identifiers, including proxy CONNECT tunnel targets. Host normalization now also follows RFC 3986 normalization rules for percent-encoded octets by decoding percent-encoded unreserved characters and uppercasing the hexadecimal digits of retained percent-encoded octets. (`#5095 <https://github.com/urllib3/urllib3/issues/5095>`\_\_) - Fixed an `AttributeError` on Python built with OpenSSL 4+, where `ssl.PROTOCOL_TLSv1` no longer exists. (`#5097 <https://github.com/urllib3/urllib3/issues/5097>`\_\_) - Fixed `urllib3.contrib.pyopenssl` to use cryptography APIs when reading a certificate subject and loading encrypted private keys, avoiding `DeprecationWarning` raised by pyOpenSSL 26.3.0+. (`#5103 <https://github.com/urllib3/urllib3/issues/5103>`\_\_) - Fixed handling of HTTP 303 redirects for requests with chunked or file-like bodies. (`#5161 <https://github.com/urllib3/urllib3/issues/5161>`\_\_) - Fixed `assert_fingerprint()` to raise `SSLError` instead of `binascii.Error` when a fingerprint has a supported length but contains non-hexadecimal characters. (`#5211 <https://github.com/urllib3/urllib3/issues/5211>`\_\_) ## Misc - Added a `test` dependency group containing the minimum dependencies needed to run the test suite, intended for downstream packagers. The `dev-base` and `mypy` groups now include this new group via `include-group`, removing duplication. (`#3594 <https://github.com/urllib3/urllib3/issues/3594>`\_\_) - Fixed test failures with pytest >= 9.1. (`#5094 <https://github.com/urllib3/urllib3/issues/5094>`\_\_) - Enabled JSPI tests with Firefox in the Emscripten test suite. (`#5166 <https://github.com/urllib3/urllib3/issues/5166>`\_\_) - Improved streamed response decoding performance. (`#5209 <https://github.com/urllib3/urllib3/issues/5209>`\_\_) - Fixed flaky tests. (`#5232 <https://github.com/urllib3/urllib3/issues/5232>`**, `#5234 <https://github.com/urllib3/urllib3/issues/5234>`**, `#5239 <https://github.com/urllib3/urllib3/issues/5239>`\_\_) ### [`v2.7.0`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#270-2026-05-07) [Compare Source](https://github.com/urllib3/urllib3/compare/2.6.3...2.7.0) \======================= ## Security Addressed high-severity security issues. Impact was limited to specific use cases detailed in the accompanying advisories; overall user exposure was estimated to be marginal. - Decompression-bomb safeguards of the streaming API were bypassed: 1. When `HTTPResponse.drain_conn()` was called after the response had been read and decompressed partially. 2. During the second `HTTPResponse.read(amt=N)` or `HTTPResponse.stream(amt=N)` call when the response was decompressed using the official `Brotli <https://pypi.org/project/brotli/>`\_\_ library. See `GHSA-mf9v-mfxr-j63j <https://github.com/urllib3/urllib3/security/advisories/GHSA-mf9v-mfxr-j63j>`\_\_ for details. - HTTP pools created using `ProxyManager.connection_from_url` did not strip sensitive headers specified in `Retry.remove_headers_on_redirect` when redirecting to a different host. (`GHSA-qccp-gfcp-xxvc <https://github.com/urllib3/urllib3/security/advisories/GHSA-qccp-gfcp-xxvc>`\_\_) ## Deprecations and Removals - Used `FutureWarning` instead of `DeprecationWarning` for better visibility of existing deprecation notices. Rescheduled the removal of deprecated features to version 3.0. (`#3763 <https://github.com/urllib3/urllib3/issues/3763>`\_\_) - Removed support for end-of-life Python 3.9. (`#3720 <https://github.com/urllib3/urllib3/issues/3720>`\_\_) - Removed support for end-of-life PyPy3.10. (`#4979 <https://github.com/urllib3/urllib3/issues/4979>`\_\_) - Bumped the minimum supported pyOpenSSL version to 19.0.0. (`#3777 <https://github.com/urllib3/urllib3/issues/3777>`\_\_) ## Bugfixes - Fixed a bug where `HTTPResponse.read(amt=None)` was ignoring decompressed data buffered from previous partial reads. (`#3636 <https://github.com/urllib3/urllib3/issues/3636>`\_\_) - Fixed a bug where `HTTPResponse.read()` could cache only part of the response after a partial read when `cache_content=True`. (`#4967 <https://github.com/urllib3/urllib3/issues/4967>`\_\_) - Fixed `HTTPResponse.stream()` and `HTTPResponse.read_chunked()` to handle `amt=0`. (`#3793 <https://github.com/urllib3/urllib3/issues/3793>`\_\_) - Updated `_TYPE_BODY` type alias to include missing `Iterable[str]`, matching the documented and runtime behavior of chunked request bodies. (`#3798 <https://github.com/urllib3/urllib3/issues/3798>`\_\_) - Fixed `LocationParseError` when paths resembling schemeless URIs were passed to `HTTPConnectionPool.urlopen()`. (`#3352 <https://github.com/urllib3/urllib3/issues/3352>`\_\_) - Fixed `BaseHTTPResponse.readinto()` type annotation to accept `memoryview` in addition to `bytearray`, matching the `io.RawIOBase.readinto` contract and enabling use with `io.BufferedReader` without type errors. (`#3764 <https://github.com/urllib3/urllib3/issues/3764>`\_\_) ### [`v2.6.3`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#263-2026-01-07) [Compare Source](https://github.com/urllib3/urllib3/compare/2.6.2...2.6.3) \================== - Fixed a high-severity security issue where decompression-bomb safeguards of the streaming API were bypassed when HTTP redirects were followed. (`GHSA-38jv-5279-wg99 <https://github.com/urllib3/urllib3/security/advisories/GHSA-38jv-5279-wg99>`\_\_) - Started treating `Retry-After` times greater than 6 hours as 6 hours by default. (`#3743 <https://github.com/urllib3/urllib3/issues/3743>`\_\_) - Fixed `urllib3.connection.VerifiedHTTPSConnection` on Emscripten. (`#3752 <https://github.com/urllib3/urllib3/issues/3752>`\_\_) ### [`v2.6.2`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#262-2025-12-11) [Compare Source](https://github.com/urllib3/urllib3/compare/2.6.1...2.6.2) \================== - Fixed `HTTPResponse.read_chunked()` to properly handle leftover data in the decoder's buffer when reading compressed chunked responses. (`#3734 <https://github.com/urllib3/urllib3/issues/3734>`\_\_) ### [`v2.6.1`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#261-2025-12-08) [Compare Source](https://github.com/urllib3/urllib3/compare/2.6.0...2.6.1) \================== - Restore previously removed `HTTPResponse.getheaders()` and `HTTPResponse.getheader()` methods. (`#3731 <https://github.com/urllib3/urllib3/issues/3731>`\_\_) ### [`v2.6.0`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#260-2025-12-05) [Compare Source](https://github.com/urllib3/urllib3/compare/2.5.0...2.6.0) \================== ## Security - Fixed a security issue where streaming API could improperly handle highly compressed HTTP content ("decompression bombs") leading to excessive resource consumption even when a small amount of data was requested. Reading small chunks of compressed data is safer and much more efficient now. (`GHSA-2xpw-w6gg-jr37 <https://github.com/urllib3/urllib3/security/advisories/GHSA-2xpw-w6gg-jr37>`\_\_) - Fixed a security issue where an attacker could compose an HTTP response with virtually unlimited links in the `Content-Encoding` header, potentially leading to a denial of service (DoS) attack by exhausting system resources during decoding. The number of allowed chained encodings is now limited to 5. (`GHSA-gm62-xv2j-4w53 <https://github.com/urllib3/urllib3/security/advisories/GHSA-gm62-xv2j-4w53>`\_\_) .. caution:: - If urllib3 is not installed with the optional `urllib3[brotli]` extra, but your environment contains a Brotli/brotlicffi/brotlipy package anyway, make sure to upgrade it to at least Brotli 1.2.0 or brotlicffi 1.2.0.0 to benefit from the security fixes and avoid warnings. Prefer using `urllib3[brotli]` to install a compatible Brotli package automatically. - If you use custom decompressors, please make sure to update them to respect the changed API of `urllib3.response.ContentDecoder`. ## Features - Enabled retrieval, deletion, and membership testing in `HTTPHeaderDict` using bytes keys. (`#3653 <https://github.com/urllib3/urllib3/issues/3653>`\_\_) - Added host and port information to string representations of `HTTPConnection`. (`#3666 <https://github.com/urllib3/urllib3/issues/3666>`\_\_) - Added support for Python 3.14 free-threading builds explicitly. (`#3696 <https://github.com/urllib3/urllib3/issues/3696>`\_\_) ## Removals - Removed the `HTTPResponse.getheaders()` method in favor of `HTTPResponse.headers`. Removed the `HTTPResponse.getheader(name, default)` method in favor of `HTTPResponse.headers.get(name, default)`. (`#3622 <https://github.com/urllib3/urllib3/issues/3622>`\_\_) ## Bugfixes - Fixed redirect handling in `urllib3.PoolManager` when an integer is passed for the retries parameter. (`#3649 <https://github.com/urllib3/urllib3/issues/3649>`\_\_) - Fixed `HTTPConnectionPool` when used in Emscripten with no explicit port. (`#3664 <https://github.com/urllib3/urllib3/issues/3664>`\_\_) - Fixed handling of `SSLKEYLOGFILE` with expandable variables. (`#3700 <https://github.com/urllib3/urllib3/issues/3700>`\_\_) ## Misc - Changed the `zstd` extra to install `backports.zstd` instead of `zstandard` on Python 3.13 and before. (`#3693 <https://github.com/urllib3/urllib3/issues/3693>`\_\_) - Improved the performance of content decoding by optimizing `BytesQueueBuffer` class. (`#3710 <https://github.com/urllib3/urllib3/issues/3710>`\_\_) - Allowed building the urllib3 package with newer setuptools-scm v9.x. (`#3652 <https://github.com/urllib3/urllib3/issues/3652>`\_\_) - Ensured successful urllib3 builds by setting Hatchling requirement to >= 1.27.0. (`#3638 <https://github.com/urllib3/urllib3/issues/3638>`\_\_) ### [`v2.5.0`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#250-2025-06-18) [Compare Source](https://github.com/urllib3/urllib3/compare/2.4.0...2.5.0) \================== ## Features - Added support for the `compression.zstd` module that is new in Python 3.14. See `PEP 784 <https://peps.python.org/pep-0784/>`\_ for more information. (`#3610 <https://github.com/urllib3/urllib3/issues/3610>`\_\_) - Added support for version 0.5 of `hatch-vcs` (`#3612 <https://github.com/urllib3/urllib3/issues/3612>`\_\_) ## Bugfixes - Fixed a security issue where restricting the maximum number of followed redirects at the `urllib3.PoolManager` level via the `retries` parameter did not work. - Made the Node.js runtime respect redirect parameters such as `retries` and `redirects`. - Raised exception for `HTTPResponse.shutdown` on a connection already released to the pool. (`#3581 <https://github.com/urllib3/urllib3/issues/3581>`\_\_) - Fixed incorrect `CONNECT` statement when using an IPv6 proxy with `connection_from_host`. Previously would not be wrapped in `[]`. (`#3615 <https://github.com/urllib3/urllib3/issues/3615>`\_\_) ### [`v2.4.0`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#240-2025-04-10) [Compare Source](https://github.com/urllib3/urllib3/compare/2.3.0...2.4.0) \================== ## Features - Applied PEP 639 by specifying the license fields in pyproject.toml. (`#3522 <https://github.com/urllib3/urllib3/issues/3522>`\_\_) - Updated exceptions to save and restore more properties during the pickle/serialization process. (`#3567 <https://github.com/urllib3/urllib3/issues/3567>`\_\_) - Added `verify_flags` option to `create_urllib3_context` with a default of `VERIFY_X509_PARTIAL_CHAIN` and `VERIFY_X509_STRICT` for Python 3.13+. (`#3571 <https://github.com/urllib3/urllib3/issues/3571>`\_\_) ## Bugfixes - Fixed a bug with partial reads of streaming data in Emscripten. (`#3555 <https://github.com/urllib3/urllib3/issues/3555>`\_\_) ## Misc - Switched to uv for installing development dependecies. (`#3550 <https://github.com/urllib3/urllib3/issues/3550>`\_\_) - Removed the `multiple.intoto.jsonl` asset from GitHub releases. Attestation of release files since v2.3.0 can be found on PyPI. (`#3566 <https://github.com/urllib3/urllib3/issues/3566>`\_\_) ### [`v2.3.0`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#240-2025-04-10) [Compare Source](https://github.com/urllib3/urllib3/compare/2.2.3...2.3.0) \================== ## Features - Applied PEP 639 by specifying the license fields in pyproject.toml. (`#3522 <https://github.com/urllib3/urllib3/issues/3522>`\_\_) - Updated exceptions to save and restore more properties during the pickle/serialization process. (`#3567 <https://github.com/urllib3/urllib3/issues/3567>`\_\_) - Added `verify_flags` option to `create_urllib3_context` with a default of `VERIFY_X509_PARTIAL_CHAIN` and `VERIFY_X509_STRICT` for Python 3.13+. (`#3571 <https://github.com/urllib3/urllib3/issues/3571>`\_\_) ## Bugfixes - Fixed a bug with partial reads of streaming data in Emscripten. (`#3555 <https://github.com/urllib3/urllib3/issues/3555>`\_\_) ## Misc - Switched to uv for installing development dependecies. (`#3550 <https://github.com/urllib3/urllib3/issues/3550>`\_\_) - Removed the `multiple.intoto.jsonl` asset from GitHub releases. Attestation of release files since v2.3.0 can be found on PyPI. (`#3566 <https://github.com/urllib3/urllib3/issues/3566>`\_\_) ### [`v2.2.3`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#223-2024-09-12) [Compare Source](https://github.com/urllib3/urllib3/compare/2.2.2...2.2.3) \================== ## Features - Added support for Python 3.13. (`#3473 <https://github.com/urllib3/urllib3/issues/3473>`\_\_) ## Bugfixes - Fixed the default encoding of chunked request bodies to be UTF-8 instead of ISO-8859-1. All other methods of supplying a request body already use UTF-8 starting in urllib3 v2.0. (`#3053 <https://github.com/urllib3/urllib3/issues/3053>`\_\_) - Fixed ResourceWarning on CONNECT with Python < 3.11.4 by backporting [python/cpython#103472](https://github.com/python/cpython/issues/103472). (`#3252 <https://github.com/urllib3/urllib3/issues/3252>`\_\_) - Adjust tolerance for floating-point comparison on Windows to avoid flakiness in CI (`#3413 <https://github.com/urllib3/urllib3/issues/3413>`\_\_) - Fixed a crash where certain standard library hash functions were absent in restricted environments. (`#3432 <https://github.com/urllib3/urllib3/issues/3432>`\_\_) - Fixed mypy error when adding to `HTTPConnection.default_socket_options`. (`#3448 <https://github.com/urllib3/urllib3/issues/3448>`\_\_) ## HTTP/2 (experimental) HTTP/2 support is still in early development. - Excluded Transfer-Encoding: chunked from HTTP/2 request body (`#3425 <https://github.com/urllib3/urllib3/issues/3425>`\_\_) - Added version checking for `h2` (<https://pypi.org/project/h2/>) usage. Now only accepting supported h2 major version 4.x.x. (`#3290 <https://github.com/urllib3/urllib3/issues/3290>`\_\_) - Added a probing mechanism for determining whether a given target origin supports HTTP/2 via ALPN. (`#3301 <https://github.com/urllib3/urllib3/issues/3301>`\_\_) - Add support for sending a request body with HTTP/2 (`#3302 <https://github.com/urllib3/urllib3/issues/3302>`\_\_) ## Deprecations and Removals - Note for downstream distributors: the `_version.py` file has been removed and is now created at build time by hatch-vcs. (`#3412 <https://github.com/urllib3/urllib3/issues/3412>`\_\_) - Drop support for end-of-life PyPy3.8 and PyPy3.9. (`#3475 <https://github.com/urllib3/urllib3/issues/3475>`\_\_) ### [`v2.2.2`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#222-2024-06-17) [Compare Source](https://github.com/urllib3/urllib3/compare/2.2.1...2.2.2) \================== - Added the `Proxy-Authorization` header to the list of headers to strip from requests when redirecting to a different host. As before, different headers can be set via `Retry.remove_headers_on_redirect`. - Allowed passing negative integers as `amt` to read methods of `http.client.HTTPResponse` as an alternative to `None`. (`#3122 <https://github.com/urllib3/urllib3/issues/3122>`\_\_) - Fixed return types representing copying actions to use `typing.Self`. (`#3363 <https://github.com/urllib3/urllib3/issues/3363>`\_\_) ### [`v2.2.1`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#221-2024-02-16) [Compare Source](https://github.com/urllib3/urllib3/compare/2.2.0...2.2.1) \================== - Fixed issue where `InsecureRequestWarning` was emitted for HTTPS connections when using Emscripten. (`#3331 <https://github.com/urllib3/urllib3/issues/3331>`\_\_) - Fixed `HTTPConnectionPool.urlopen` to stop automatically casting non-proxy headers to `HTTPHeaderDict`. This change was premature as it did not apply to proxy headers and `HTTPHeaderDict` does not handle byte header values correctly yet. (`#3343 <https://github.com/urllib3/urllib3/issues/3343>`\_\_) - Changed `InvalidChunkLength` to `ProtocolError` when response terminates before the chunk length is sent. (`#2860 <https://github.com/urllib3/urllib3/issues/2860>`\_\_) - Changed `ProtocolError` to be more verbose on incomplete reads with excess content. (`#3261 <https://github.com/urllib3/urllib3/issues/3261>`\_\_) ### [`v2.2.0`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#220-2024-01-30) [Compare Source](https://github.com/urllib3/urllib3/compare/2.1.0...2.2.0) \================== - Added support for `Emscripten and Pyodide <https://urllib3.readthedocs.io/en/latest/reference/contrib/emscripten.html>`**, including streaming support in cross-origin isolated browser environments where threading is enabled. (`#2951 <https://github.com/urllib3/urllib3/issues/2951>`**) - Added support for `HTTPResponse.read1()` method. (`#3186 <https://github.com/urllib3/urllib3/issues/3186>`\_\_) - Added rudimentary support for HTTP/2. (`#3284 <https://github.com/urllib3/urllib3/issues/3284>`\_\_) - Fixed issue where requests against urls with trailing dots were failing due to SSL errors when using proxy. (`#2244 <https://github.com/urllib3/urllib3/issues/2244>`\_\_) - Fixed `HTTPConnection.proxy_is_verified` and `HTTPSConnection.proxy_is_verified` to be always set to a boolean after connecting to a proxy. It could be `None` in some cases previously. (`#3130 <https://github.com/urllib3/urllib3/issues/3130>`\_\_) - Fixed an issue where `headers` passed in a request with `json=` would be mutated (`#3203 <https://github.com/urllib3/urllib3/issues/3203>`\_\_) - Fixed `HTTPSConnection.is_verified` to be set to `False` when connecting from a HTTPS proxy to an HTTP target. It was set to `True` previously. (`#3267 <https://github.com/urllib3/urllib3/issues/3267>`\_\_) - Fixed handling of new error message from OpenSSL 3.2.0 when configuring an HTTP proxy as HTTPS (`#3268 <https://github.com/urllib3/urllib3/issues/3268>`\_\_) - Fixed TLS 1.3 post-handshake auth when the server certificate validation is disabled (`#3325 <https://github.com/urllib3/urllib3/issues/3325>`\_\_) - Note for downstream distributors: To run integration tests, you now need to run the tests a second time with the `--integration` pytest flag. (`#3181 <https://github.com/urllib3/urllib3/issues/3181>`\_\_) ### [`v2.1.0`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#210-2023-11-13) [Compare Source](https://github.com/urllib3/urllib3/compare/2.0.7...2.1.0) \================== - Removed support for the deprecated urllib3\[secure] extra. (`#2680 <https://github.com/urllib3/urllib3/issues/2680>`\_\_) - Removed support for the deprecated SecureTransport TLS implementation. (`#2681 <https://github.com/urllib3/urllib3/issues/2681>`\_\_) - Removed support for the end-of-life Python 3.7. (`#3143 <https://github.com/urllib3/urllib3/issues/3143>`\_\_) - Allowed loading CA certificates from memory for proxies. (`#3065 <https://github.com/urllib3/urllib3/issues/3065>`\_\_) - Fixed decoding Gzip-encoded responses which specified `x-gzip` content-encoding. (`#3174 <https://github.com/urllib3/urllib3/issues/3174>`\_\_) ### [`v2.0.7`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#207-2023-10-17) [Compare Source](https://github.com/urllib3/urllib3/compare/2.0.6...2.0.7) \================== - Made body stripped from HTTP requests changing the request method to GET after HTTP 303 "See Other" redirect responses. ### [`v2.0.6`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#206-2023-10-02) [Compare Source](https://github.com/urllib3/urllib3/compare/2.0.5...2.0.6) \================== - Added the `Cookie` header to the list of headers to strip from requests when redirecting to a different host. As before, different headers can be set via `Retry.remove_headers_on_redirect`. ### [`v2.0.5`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#205-2023-09-20) [Compare Source](https://github.com/urllib3/urllib3/compare/2.0.4...2.0.5) \================== - Allowed pyOpenSSL third-party module without any deprecation warning. (`#3126 <https://github.com/urllib3/urllib3/issues/3126>`\_\_) - Fixed default `blocksize` of `HTTPConnection` classes to match high-level classes. Previously was 8KiB, now 16KiB. (`#3066 <https://github.com/urllib3/urllib3/issues/3066>`\_\_) ### [`v2.0.4`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#204-2023-07-19) [Compare Source](https://github.com/urllib3/urllib3/compare/2.0.3...2.0.4) \================== - Added support for union operators to `HTTPHeaderDict` (`#2254 <https://github.com/urllib3/urllib3/issues/2254>`\_\_) - Added `BaseHTTPResponse` to `urllib3.__all__` (`#3078 <https://github.com/urllib3/urllib3/issues/3078>`\_\_) - Fixed `urllib3.connection.HTTPConnection` to raise the `http.client.connect` audit event to have the same behavior as the standard library HTTP client (`#2757 <https://github.com/urllib3/urllib3/issues/2757>`\_\_) - Relied on the standard library for checking hostnames in supported PyPy releases (`#3087 <https://github.com/urllib3/urllib3/issues/3087>`\_\_) ### [`v2.0.3`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#203-2023-06-07) [Compare Source](https://github.com/urllib3/urllib3/compare/2.0.2...2.0.3) \================== - Allowed alternative SSL libraries such as LibreSSL, while still issuing a warning as we cannot help users facing issues with implementations other than OpenSSL. (`#3020 <https://github.com/urllib3/urllib3/issues/3020>`\_\_) - Deprecated URLs which don't have an explicit scheme (`#2950 <https://github.com/urllib3/urllib3/pull/2950>`\_) - Fixed response decoding with Zstandard when compressed data is made of several frames. (`#3008 <https://github.com/urllib3/urllib3/issues/3008>`\_\_) - Fixed `assert_hostname=False` to correctly skip hostname check. (`#3051 <https://github.com/urllib3/urllib3/issues/3051>`\_\_) ### [`v2.0.2`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#202-2023-05-03) [Compare Source](https://github.com/urllib3/urllib3/compare/2.0.1...2.0.2) \================== - Fixed `HTTPResponse.stream()` to continue yielding bytes if buffered decompressed data was still available to be read even if the underlying socket is closed. This prevents a compressed response from being truncated. (`#3009 <https://github.com/urllib3/urllib3/issues/3009>`\_\_) ### [`v2.0.1`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#201-2023-04-30) [Compare Source](https://github.com/urllib3/urllib3/compare/2.0.0...2.0.1) \================== - Fixed a socket leak when fingerprint or hostname verifications fail. (`#2991 <https://github.com/urllib3/urllib3/issues/2991>`\_\_) - Fixed an error when `HTTPResponse.read(0)` was the first `read` call or when the internal response body buffer was otherwise empty. (`#2998 <https://github.com/urllib3/urllib3/issues/2998>`\_\_) ### [`v2.0.0`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#200-2023-04-26) [Compare Source](https://github.com/urllib3/urllib3/compare/1.26.20...2.0.0) \================== Read the `v2.0 migration guide <https://urllib3.readthedocs.io/en/latest/v2-migration-guide.html>`\_\_ for help upgrading to the latest version of urllib3. ## Removed - Removed support for Python 2.7, 3.5, and 3.6 (`#883 <https://github.com/urllib3/urllib3/issues/883>`**, `#2336 <https://github.com/urllib3/urllib3/issues/2336>`**). - Removed fallback on certificate `commonName` in `match_hostname()` function. This behavior was deprecated in May 2000 in RFC 2818. Instead only `subjectAltName` is used to verify the hostname by default. To enable verifying the hostname against `commonName` use `SSLContext.hostname_checks_common_name = True` (`#2113 <https://github.com/urllib3/urllib3/issues/2113>`\_\_). - Removed support for Python with an `ssl` module compiled with LibreSSL, CiscoSSL, wolfSSL, and all other OpenSSL alternatives. Python is moving to require OpenSSL with PEP 644 (`#2168 <https://github.com/urllib3/urllib3/issues/2168>`\_\_). - Removed support for OpenSSL versions earlier than 1.1.1 or that don't have SNI support. When an incompatible OpenSSL version is detected an `ImportError` is raised (`#2168 <https://github.com/urllib3/urllib3/issues/2168>`\_\_). - Removed the list of default ciphers for OpenSSL 1.1.1+ and SecureTransport as their own defaults are already secure (`#2082 <https://github.com/urllib3/urllib3/issues/2082>`\_\_). - Removed `urllib3.contrib.appengine.AppEngineManager` and support for Google App Engine Standard Environment (`#2044 <https://github.com/urllib3/urllib3/issues/2044>`\_\_). - Removed deprecated `Retry` options `method_whitelist`, `DEFAULT_REDIRECT_HEADERS_BLACKLIST` (`#2086 <https://github.com/urllib3/urllib3/issues/2086>`\_\_). - Removed `urllib3.HTTPResponse.from_httplib` (`#2648 <https://github.com/urllib3/urllib3/issues/2648>`\_\_). - Removed default value of `None` for the `request_context` parameter of `urllib3.PoolManager.connection_from_pool_key`. This change should have no effect on users as the default value of `None` was an invalid option and was never used (`#1897 <https://github.com/urllib3/urllib3/issues/1897>`\_\_). - Removed the `urllib3.request` module. `urllib3.request.RequestMethods` has been made a private API. This change was made to ensure that `from urllib3 import request` imported the top-level `request()` function instead of the `urllib3.request` module (`#2269 <https://github.com/urllib3/urllib3/issues/2269>`\_\_). - Removed support for SSLv3.0 from the `urllib3.contrib.pyopenssl` even when support is available from the compiled OpenSSL library (`#2233 <https://github.com/urllib3/urllib3/issues/2233>`\_\_). - Removed the deprecated `urllib3.contrib.ntlmpool` module (`#2339 <https://github.com/urllib3/urllib3/issues/2339>`\_\_). - Removed `DEFAULT_CIPHERS`, `HAS_SNI`, `USE_DEFAULT_SSLCONTEXT_CIPHERS`, from the private module `urllib3.util.ssl_` (`#2168 <https://github.com/urllib3/urllib3/issues/2168>`\_\_). - Removed `urllib3.exceptions.SNIMissingWarning` (`#2168 <https://github.com/urllib3/urllib3/issues/2168>`\_\_). - Removed the `_prepare_conn` method from `HTTPConnectionPool`. Previously this was only used to call `HTTPSConnection.set_cert()` by `HTTPSConnectionPool` (`#1985 <https://github.com/urllib3/urllib3/issues/1985>`\_\_). - Removed `tls_in_tls_required` property from `HTTPSConnection`. This is now determined from the `scheme` parameter in `HTTPConnection.set_tunnel()` (`#1985 <https://github.com/urllib3/urllib3/issues/1985>`\_\_). - Removed the `strict` parameter/attribute from `HTTPConnection`, `HTTPSConnection`, `HTTPConnectionPool`, `HTTPSConnectionPool`, and `HTTPResponse` (`#2064 <https://github.com/urllib3/urllib3/issues/2064>`\_\_). ## Deprecated - Deprecated `HTTPResponse.getheaders()` and `HTTPResponse.getheader()` which will be removed in urllib3 v2.1.0. Instead use `HTTPResponse.headers` and `HTTPResponse.headers.get(name, default)`. (`#1543 <https://github.com/urllib3/urllib3/issues/1543>`**, `#2814 <https://github.com/urllib3/urllib3/issues/2814>`**). - Deprecated `urllib3.contrib.pyopenssl` module which will be removed in urllib3 v2.1.0 (`#2691 <https://github.com/urllib3/urllib3/issues/2691>`\_\_). - Deprecated `urllib3.contrib.securetransport` module which will be removed in urllib3 v2.1.0 (`#2692 <https://github.com/urllib3/urllib3/issues/2692>`\_\_). - Deprecated `ssl_version` option in favor of `ssl_minimum_version`. `ssl_version` will be removed in urllib3 v2.1.0 (`#2110 <https://github.com/urllib3/urllib3/issues/2110>`\_\_). - Deprecated the `strict` parameter of `PoolManager.connection_from_context()` as it's not longer needed in Python 3.x. It will be removed in urllib3 v2.1.0 (`#2267 <https://github.com/urllib3/urllib3/issues/2267>`\_\_) - Deprecated the `NewConnectionError.pool` attribute which will be removed in urllib3 v2.1.0 (`#2271 <https://github.com/urllib3/urllib3/issues/2271>`\_\_). - Deprecated `format_header_param_html5` and `format_header_param` in favor of `format_multipart_header_param` (`#2257 <https://github.com/urllib3/urllib3/issues/2257>`\_\_). - Deprecated `RequestField.header_formatter` parameter which will be removed in urllib3 v2.1.0 (`#2257 <https://github.com/urllib3/urllib3/issues/2257>`\_\_). - Deprecated `HTTPSConnection.set_cert()` method. Instead pass parameters to the `HTTPSConnection` constructor (`#1985 <https://github.com/urllib3/urllib3/issues/1985>`\_\_). - Deprecated `HTTPConnection.request_chunked()` method which will be removed in urllib3 v2.1.0. Instead pass `chunked=True` to `HTTPConnection.request()` (`#1985 <https://github.com/urllib3/urllib3/issues/1985>`\_\_). ## Added - Added top-level `urllib3.request` function which uses a preconfigured module-global `PoolManager` instance (`#2150 <https://github.com/urllib3/urllib3/issues/2150>`\_\_). - Added the `json` parameter to `urllib3.request()`, `PoolManager.request()`, and `ConnectionPool.request()` methods to send JSON bodies in requests. Using this parameter will set the header `Content-Type: application/json` if `Content-Type` isn't already defined. Added support for parsing JSON response bodies with `HTTPResponse.json()` method (`#2243 <https://github.com/urllib3/urllib3/issues/2243>`\_\_). - Added type hints to the `urllib3` module (`#1897 <https://github.com/urllib3/urllib3/issues/1897>`\_\_). - Added `ssl_minimum_version` and `ssl_maximum_version` options which set `SSLContext.minimum_version` and `SSLContext.maximum_version` (`#2110 <https://github.com/urllib3/urllib3/issues/2110>`\_\_). - Added support for Zstandard (RFC 8878) when `zstandard` 1.18.0 or later is installed. Added the `zstd` extra which installs the `zstandard` package (`#1992 <https://github.com/urllib3/urllib3/issues/1992>`\_\_). - Added `urllib3.response.BaseHTTPResponse` class. All future response classes will be subclasses of `BaseHTTPResponse` (`#2083 <https://github.com/urllib3/urllib3/issues/2083>`\_\_). - Added `FullPoolError` which is raised when `PoolManager(block=True)` and a connection is returned to a full pool (`#2197 <https://github.com/urllib3/urllib3/issues/2197>`\_\_). - Added `HTTPHeaderDict` to the top-level `urllib3` namespace (`#2216 <https://github.com/urllib3/urllib3/issues/2216>`\_\_). - Added support for configuring header merging behavior with HTTPHeaderDict When using a `HTTPHeaderDict` to provide headers for a request, by default duplicate header values will be repeated. But if `combine=True` is passed into a call to `HTTPHeaderDict.add`, then the added header value will be merged in with an existing value into a comma-separated list (`X-My-Header: foo, bar`) (`#2242 <https://github.com/urllib3/urllib3/issues/2242>`\_\_). - Added `NameResolutionError` exception when a DNS error occurs (`#2305 <https://github.com/urllib3/urllib3/issues/2305>`\_\_). - Added `proxy_assert_hostname` and `proxy_assert_fingerprint` kwargs to `ProxyManager` (`#2409 <https://github.com/urllib3/urllib3/issues/2409>`\_\_). - Added a configurable `backoff_max` parameter to the `Retry` class. If a custom `backoff_max` is provided to the `Retry` class, it will replace the `Retry.DEFAULT_BACKOFF_MAX` (`#2494 <https://github.com/urllib3/urllib3/issues/2494>`\_\_). - Added the `authority` property to the Url class as per RFC 3986 3.2. This property should be used in place of `netloc` for users who want to include the userinfo (auth) component of the URI (`#2520 <https://github.com/urllib3/urllib3/issues/2520>`\_\_). - Added the `scheme` parameter to `HTTPConnection.set_tunnel` to configure the scheme of the origin being tunnelled to (`#1985 <https://github.com/urllib3/urllib3/issues/1985>`\_\_). - Added the `is_closed`, `is_connected` and `has_connected_to_proxy` properties to `HTTPConnection` (`#1985 <https://github.com/urllib3/urllib3/issues/1985>`\_\_). - Added optional `backoff_jitter` parameter to `Retry`. (`#2952 <https://github.com/urllib3/urllib3/issues/2952>`\_\_) ## Changed - Changed `urllib3.response.HTTPResponse.read` to respect the semantics of `io.BufferedIOBase` regardless of compression. Specifically, this method: - Only returns an empty bytes object to indicate EOF (that is, the response has been fully consumed). - Never returns more bytes than requested. - Can issue any number of system calls: zero, one or multiple. If you want each `urllib3.response.HTTPResponse.read` call to issue a single system call, you need to disable decompression by setting `decode_content=False` (`#2128 <https://github.com/urllib3/urllib3/issues/2128>`\_\_). - Changed `urllib3.HTTPConnection.getresponse` to return an instance of `urllib3.HTTPResponse` instead of `http.client.HTTPResponse` (`#2648 <https://github.com/urllib3/urllib3/issues/2648>`\_\_). - Changed `ssl_version` to instead set the corresponding `SSLContext.minimum_version` and `SSLContext.maximum_version` values. Regardless of `ssl_version` passed `SSLContext` objects are now constructed using `ssl.PROTOCOL_TLS_CLIENT` (`#2110 <https://github.com/urllib3/urllib3/issues/2110>`\_\_). - Changed default `SSLContext.minimum_version` to be `TLSVersion.TLSv1_2` in line with Python 3.10 (`#2373 <https://github.com/urllib3/urllib3/issues/2373>`\_\_). - Changed `ProxyError` to wrap any connection error (timeout, TLS, DNS) that occurs when connecting to the proxy (`#2482 <https://github.com/urllib3/urllib3/pull/2482>`\_\_). - Changed `urllib3.util.create_urllib3_context` to not override the system cipher suites with a default value. The new default will be cipher suites configured by the operating system (`#2168 <https://github.com/urllib3/urllib3/issues/2168>`\_\_). - Changed `multipart/form-data` header parameter formatting matches the WHATWG HTML Standard as of 2021-06-10. Control characters in filenames are no longer percent encoded (`#2257 <https://github.com/urllib3/urllib3/issues/2257>`\_\_). - Changed the error raised when connecting via HTTPS when the `ssl` module isn't available from `SSLError` to `ImportError` (`#2589 <https://github.com/urllib3/urllib3/issues/2589>`\_\_). - Changed `HTTPConnection.request()` to always use lowercase chunk boundaries when sending requests with `Transfer-Encoding: chunked` (`#2515 <https://github.com/urllib3/urllib3/issues/2515>`\_\_). - Changed `enforce_content_length` default to True, preventing silent data loss when reading streamed responses (`#2514 <https://github.com/urllib3/urllib3/issues/2514>`\_\_). - Changed internal implementation of `HTTPHeaderDict` to use `dict` instead of `collections.OrderedDict` for better performance (`#2080 <https://github.com/urllib3/urllib3/issues/2080>`\_\_). - Changed the `urllib3.contrib.pyopenssl` module to wrap `OpenSSL.SSL.Error` with `ssl.SSLError` in `PyOpenSSLContext.load_cert_chain` (`#2628 <https://github.com/urllib3/urllib3/issues/2628>`\_\_). - Changed usage of the deprecated `socket.error` to `OSError` (`#2120 <https://github.com/urllib3/urllib3/issues/2120>`\_\_). - Changed all parameters in the `HTTPConnection` and `HTTPSConnection` constructors to be keyword-only except `host` and `port` (`#1985 <https://github.com/urllib3/urllib3/issues/1985>`\_\_). - Changed `HTTPConnection.getresponse()` to set the socket timeout from `HTTPConnection.timeout` value before reading data from the socket. This previously was done manually by the `HTTPConnectionPool` calling `HTTPConnection.sock.settimeout(...)` (`#1985 <https://github.com/urllib3/urllib3/issues/1985>`\_\_). - Changed the `_proxy_host` property to `_tunnel_host` in `HTTPConnectionPool` to more closely match how the property is used (value in `HTTPConnection.set_tunnel()`) (`#1985 <https://github.com/urllib3/urllib3/issues/1985>`\_\_). - Changed name of `Retry.BACK0FF_MAX` to be `Retry.DEFAULT_BACKOFF_MAX`. - Changed TLS handshakes to use `SSLContext.check_hostname` when possible (`#2452 <https://github.com/urllib3/urllib3/pull/2452>`\_\_). - Changed `server_hostname` to behave like other parameters only used by `HTTPSConnectionPool` (`#2537 <https://github.com/urllib3/urllib3/pull/2537>`\_\_). - Changed the default `blocksize` to 16KB to match OpenSSL's default read amounts (`#2348 <https://github.com/urllib3/urllib3/pull/2348>`\_\_). - Changed `HTTPResponse.read()` to raise an error when calling with `decode_content=False` after using `decode_content=True` to prevent data loss (`#2800 <https://github.com/urllib3/urllib3/issues/2800>`\_\_). ## Fixed - Fixed thread-safety issue where accessing a `PoolManager` with many distinct origins would cause connection pools to be closed while requests are in progress (`#1252 <https://github.com/urllib3/urllib3/issues/1252>`\_\_). - Fixed an issue where an `HTTPConnection` instance would erroneously reuse the socket read timeout value from reading the previous response instead of a newly configured connect timeout. Instead now if `HTTPConnection.timeout` is updated before sending the next request the new timeout value will be used (`#2645 <https://github.com/urllib3/urllib3/issues/2645>`\_\_). - Fixed `socket.error.errno` when raised from pyOpenSSL's `OpenSSL.SSL.SysCallError` (`#2118 <https://github.com/urllib3/urllib3/issues/2118>`\_\_). - Fixed the default value of `HTTPSConnection.socket_options` to match `HTTPConnection` (`#2213 <https://github.com/urllib3/urllib3/issues/2213>`\_\_). - Fixed a bug where `headers` would be modified by the `remove_headers_on_redirect` feature (`#2272 <https://github.com/urllib3/urllib3/issues/2272>`\_\_). - Fixed a reference cycle bug in `urllib3.util.connection.create_connection()` (`#2277 <https://github.com/urllib3/urllib3/issues/2277>`\_\_). - Fixed a socket leak if `HTTPConnection.connect()` fails (`#2571 <https://github.com/urllib3/urllib3/pull/2571>`\_\_). - Fixed `urllib3.contrib.pyopenssl.WrappedSocket` and `urllib3.contrib.securetransport.WrappedSocket` close methods (`#2970 <https://github.com/urllib3/urllib3/issues/2970>`\_\_) ### [`v1.26.20`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#12620-2024-08-29) [Compare Source](https://github.com/urllib3/urllib3/compare/1.26.19...1.26.20) \==================== - Fixed a crash where certain standard library hash functions were absent in FIPS-compliant environments. (`#3432 <https://github.com/urllib3/urllib3/issues/3432>`\_\_) - Replaced deprecated dash-separated setuptools entries in `setup.cfg`. (`#3461 <https://github.com/urllib3/urllib3/pull/3461>`\_\_) - Took into account macOS setting `ECONNRESET` instead of `EPROTOTYPE` in its newer versions. (`#3416 <https://github.com/urllib3/urllib3/pull/3416>`\_\_) - Backported changes to our tests and CI configuration from v2.x to support testing with CPython 3.12 and 3.13. (`#3436 <https://github.com/urllib3/urllib3/pull/3436>`\_\_) ### [`v1.26.19`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#12619-2024-06-17) [Compare Source](https://github.com/urllib3/urllib3/compare/1.26.18...1.26.19) \==================== - Added the `Proxy-Authorization` header to the list of headers to strip from requests when redirecting to a different host. As before, different headers can be set via `Retry.remove_headers_on_redirect`. - Fixed handling of OpenSSL 3.2.0 new error message for misconfiguring an HTTP proxy as HTTPS. (`#3405 <https://github.com/urllib3/urllib3/issues/3405>`\_\_) ### [`v1.26.18`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#12618-2023-10-17) [Compare Source](https://github.com/urllib3/urllib3/compare/1.26.17...1.26.18) \==================== - Made body stripped from HTTP requests changing the request method to GET after HTTP 303 "See Other" redirect responses. ### [`v1.26.17`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#12617-2023-10-02) [Compare Source](https://github.com/urllib3/urllib3/compare/1.26.16...1.26.17) \==================== - Added the `Cookie` header to the list of headers to strip from requests when redirecting to a different host. As before, different headers can be set via `Retry.remove_headers_on_redirect`. (`#3139 <https://github.com/urllib3/urllib3/pull/3139>`\_) ### [`v1.26.16`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#12616-2023-05-23) [Compare Source](https://github.com/urllib3/urllib3/compare/1.26.15...1.26.16) \==================== - Fixed thread-safety issue where accessing a `PoolManager` with many distinct origins would cause connection pools to be closed while requests are in progress (`#2954 <https://github.com/urllib3/urllib3/pull/2954>`\_) ### [`v1.26.15`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#12615-2023-03-10) [Compare Source](https://github.com/urllib3/urllib3/compare/1.26.14...1.26.15) \==================== - Fix socket timeout value when `HTTPConnection` is reused (`#2645 <https://github.com/urllib3/urllib3/issues/2645>`\_\_) - Remove "!" character from the unreserved characters in IPv6 Zone ID parsing (`#2899 <https://github.com/urllib3/urllib3/issues/2899>`\_\_) - Fix IDNA handling of '\x80' byte (`#2901 <https://github.com/urllib3/urllib3/issues/2901>`\_\_) ### [`v1.26.14`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#12614-2023-01-11) [Compare Source](https://github.com/urllib3/urllib3/compare/1.26.13...1.26.14) \==================== - Fixed parsing of port 0 (zero) returning None, instead of 0. (`#2850 <https://github.com/urllib3/urllib3/issues/2850>`\_\_) - Removed deprecated getheaders() calls in contrib module. Fixed the type hint of `PoolKey.key_retries` by adding `bool` to the union. (`#2865 <https://github.com/urllib3/urllib3/issues/2865>`\_\_) ### [`v1.26.13`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#12613-2022-11-23) [Compare Source](https://github.com/urllib3/urllib3/compare/1.26.12...1.26.13) \==================== - Deprecated the `HTTPResponse.getheaders()` and `HTTPResponse.getheader()` methods. - Fixed an issue where parsing a URL with leading zeroes in the port would be rejected even when the port number after removing the zeroes was valid. - Fixed a deprecation warning when using cryptography v39.0.0. - Removed the `<4` in the `Requires-Python` packaging metadata field. ### [`v1.26.12`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#12612-2022-08-22) [Compare Source](https://github.com/urllib3/urllib3/compare/1.26.11...1.26.12) \==================== - Deprecated the `urllib3[secure]` extra and the `urllib3.contrib.pyopenssl` module. Both will be removed in v2.x. See this `GitHub issue <https://github.com/urllib3/urllib3/issues/2680>`\_ for justification and info on how to migrate. ### [`v1.26.11`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#12611-2022-07-25) [Compare Source](https://github.com/urllib3/urllib3/compare/1.26.10...1.26.11) \==================== - Fixed an issue where reading more than 2 GiB in a call to `HTTPResponse.read` would raise an `OverflowError` on Python 3.9 and earlier. ### [`v1.26.10`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#12610-2022-07-07) [Compare Source](https://github.com/urllib3/urllib3/compare/1.26.9...1.26.10) \==================== - Removed support for Python 3.5 - Fixed an issue where a `ProxyError` recommending configuring the proxy as HTTP instead of HTTPS could appear even when an HTTPS proxy wasn't configured. ### [`v1.26.9`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#1269-2022-03-16) [Compare Source](https://github.com/urllib3/urllib3/compare/1.26.8...1.26.9) \=================== - Changed `urllib3[brotli]` extra to favor installing Brotli libraries that are still receiving updates like `brotli` and `brotlicffi` instead of `brotlipy`. This change does not impact behavior of urllib3, only which dependencies are installed. - Fixed a socket leaking when `HTTPSConnection.connect()` raises an exception. - Fixed `server_hostname` being forwarded from `PoolManager` to `HTTPConnectionPool` when requesting an HTTP URL. Should only be forwarded when requesting an HTTPS URL. ### [`v1.26.8`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#1268-2022-01-07) [Compare Source](https://github.com/urllib3/urllib3/compare/1.26.7...1.26.8) \=================== - Added extra message to `urllib3.exceptions.ProxyError` when urllib3 detects that a proxy is configured to use HTTPS but the proxy itself appears to only use HTTP. - Added a mention of the size of the connection pool when discarding a connection due to the pool being full. - Added explicit support for Python 3.11. - Deprecated the `Retry.MAX_BACKOFF` class property in favor of `Retry.DEFAULT_MAX_BACKOFF` to better match the rest of the default parameter names. `Retry.MAX_BACKOFF` is removed in v2.0. - Changed location of the vendored `ssl.match_hostname` function from `urllib3.packages.ssl_match_hostname` to `urllib3.util.ssl_match_hostname` to ensure Python 3.10+ compatibility after being repackaged by downstream distributors. - Fixed absolute imports, all imports are now relative. ### [`v1.26.7`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#1267-2021-09-22) [Compare Source](https://github.com/urllib3/urllib3/compare/1.26.6...1.26.7) \=================== - Fixed a bug with HTTPS hostname verification involving IP addresses and lack of SNI. (Issue [#2400](https://github.com/urllib3/urllib3/issues/2400)) - Fixed a bug where IPv6 braces weren't stripped during certificate hostname matching. (Issue [#2240](https://github.com/urllib3/urllib3/issues/2240)) ### [`v1.26.6`](https://github.com/urllib3/urllib3/blob/HEAD/CHANGES.rst#1266-2021-06-25) [Compare Source](https://github.com/urllib3/urllib3/compare/1.26.5...1.26.6) \=================== - Deprecated the `urllib3.contrib.ntlmpool` module. urllib3 is not able to support it properly due to `reasons listed in this issue <https://github.com/urllib3/urllib3/issues/2282>`\_. If you are a user of this module please leave a comment. - Changed `HTTPConnection.request_chunked()` to not erroneously emit multiple `Transfer-Encoding` headers in the case that one is already specified. - Fixed typo in deprecation message to recommend `Retry.DEFAULT_ALLOWED_METHODS`. </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - At any time (no schedule defined) - Automerge - At any time (no schedule defined) 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] If you want to rebase/retry this PR, check this box --- This PR has been generated by [Mend Renovate CLI](https://github.com/renovatebot/renovate).

renovate added 1 commit

2026-10-27 00:26:42 +00:00

Update dependency urllib3 to v2 52ec85673b

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