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chore(deps): update dependency urllib3 to v2.8.0 #16

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

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2024-12-23 18:17:12 +05:30

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This PR contains the following updates:

Package	Change	Age	Confidence
urllib3 (changelog)	`==2.2.3` -> `==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`

Compare Source

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

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`

Compare Source

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

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`

Compare Source

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

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>__)

Configuration

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🚦 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.

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This PR has been generated by Renovate Bot.

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)) | `==2.2.3` -> `==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/urllib3/2.2.3/2.8.0?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>`\_\_) </details> --- ### Configuration 📅 **Schedule**: 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 [Renovate Bot](https://github.com/renovatebot/renovate).

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