Bump urllib3 from 1.26.18 to 2.7.0

[dependabot]

Bumps urllib3 from 1.26.18 to 2.7.0.

Release notes

Sourced from urllib3's releases.

2.7.0

🚀 urllib3 is fundraising for HTTP/2 support

urllib3 is raising ~$40,000 USD to release HTTP/2 support and ensure long-term sustainable maintenance of the project after a sharp decline in financial support. If your company or organization uses Python and would benefit from HTTP/2 support in Requests, pip, cloud SDKs, and thousands of other projects please consider contributing financially to ensure HTTP/2 support is developed sustainably and maintained for the long-haul.

Thank you for your support.

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. (Reported by @​Cycloctane)
  2. During the second HTTPResponse.read(amt=N) or HTTPResponse.stream(amt=N) call when the response was decompressed using the official Brotli library. (Reported by @​kimkou2024)

  See 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 reported by @​christos-spearbit)

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. (urllib3/urllib3#3763)
• Removed support for end-of-life Python 3.9. (urllib3/urllib3#3720)
• Removed support for end-of-life PyPy3.10. (urllib3/urllib3#4979)
• Bumped the minimum supported pyOpenSSL version to 19.0.0. (urllib3/urllib3#3777)

Bugfixes

• Fixed a bug where HTTPResponse.read(amt=None) was ignoring decompressed data buffered from previous partial reads. (urllib3/urllib3#3636)
• Fixed a bug where HTTPResponse.read() could cache only part of the response after a partial read when cache_content=True. (urllib3/urllib3#4967)
• Fixed HTTPResponse.stream() and HTTPResponse.read_chunked() to handle amt=0. (urllib3/urllib3#3793)
• Updated _TYPE_BODY type alias to include missing Iterable[str], matching the documented and runtime behavior of chunked request bodies. (urllib3/urllib3#3798)
• Fixed LocationParseError when paths resembling schemeless URIs were passed to HTTPConnectionPool.urlopen(). (urllib3/urllib3#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. (urllib3/urllib3#3764)

2.6.3

🚀 urllib3 is fundraising for HTTP/2 support

urllib3 is raising ~$40,000 USD to release HTTP/2 support and ensure long-term sustainable maintenance of the project after a sharp decline in financial support. If your company or organization uses Python and would benefit from HTTP/2 support in Requests, pip, cloud SDKs, and thousands of other projects please consider contributing financially to ensure HTTP/2 support is developed sustainably and maintained for the long-haul.

Thank you for your support.

Changes

• Fixed a security issue where decompression-bomb safeguards of the streaming API were bypassed when HTTP redirects were followed. (CVE-2026-21441 reported by @​D47A, 8.9 High, GHSA-38jv-5279-wg99)
• Started treating Retry-After times greater than 6 hours as 6 hours by default. (urllib3/urllib3#3743)
• Fixed urllib3.connection.VerifiedHTTPSConnection on Emscripten. (urllib3/urllib3#3752)

2.6.2

... (truncated)

Changelog

Sourced from urllib3's changelog.

2.7.0 (2026-05-07)

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) <https://github.com/urllib3/urllib3/issues/3763>__)
• Removed support for end-of-life Python 3.9. ([#3720](https://github.com/urllib3/urllib3/issues/3720) <https://github.com/urllib3/urllib3/issues/3720>__)
• Removed support for end-of-life PyPy3.10. ([#4979](https://github.com/urllib3/urllib3/issues/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) <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) <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.

... (truncated)

Commits

• 9a950b9 Release 2.7.0
• 5ec0de4 Merge commit from fork
• 2bdcc44 Merge commit from fork
• f45b0df Fix a misleading example for ProxyManager (#4970)
• 577193c Switch to nightly PyPy3.11 in CI for now (#4984)
• e90af45 Avoid infinite loop in HTTPResponse.read_chunked when amt=0 (#4974)
• 67ed74f Bump dev dependencies (#4972)
• 3abd481 Upgrade mypy to version 1.20.2 (#4978)
• 2b8725d Drop support for EOL PyPy3.10 (#4979)
• 2944b2a Upgrade setup-chrome and setup-firefox to fix warnings (#4973)
• Additional commits viewable in compare view

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Note

Medium Risk
Dependency-only change, but it’s a major-version upgrade of urllib3 and could introduce HTTP/TLS/connection behavior changes at runtime despite being low-touch in code.

Overview
Updates the pinned Python dependency urllib3 in requirements.txt from 1.26.18 to 2.7.0.

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Cursor Bugbot has reviewed your changes and found 2 potential issues.

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urllib3 2.7.0 requires Python 3.10 but project supports 3.8+

High Severity

urllib3==2.7.0 requires Python 3.10 or later, but the project's setup.cfg declares python_requires = >=3.8,<3.11, meaning it claims to support Python 3.8 and 3.9. Installing this pinned requirements file on Python 3.8 or 3.9 will fail because pip will refuse to install a package whose Requires-Python metadata doesn't match the running interpreter. This effectively breaks the project for two of its three supported Python versions.

 

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Stale types-urllib3 stubs conflict with urllib3 2.x

Medium Severity

types-urllib3==1.26.25.14 provides type stubs for the urllib3 1.x API, but urllib3==2.7.0 ships its own inline type annotations. Having both installed causes type-checking conflicts — the old stubs shadow the correct built-in types. The types-urllib3 PyPI page explicitly warns to uninstall it when using urllib3 2.0+. This package needs to be removed now that urllib3 is at 2.7.0.

Additional Locations (1)

• requirements.txt#L322-L323

 

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