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Package "python3-urllib3"

Name: python3-urllib3

Description:

HTTP library with thread-safe connection pooling for Python3
Latest version: 2.3.0-3ubuntu0.4
Release: questing (25.10)
Level: updates
Repository: main
Head package: python-urllib3
Homepage: https://urllib3.readthedocs.org

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Other versions of "python3-urllib3" in Questing

Repository Area Version
base main 2.3.0-3
security main 2.3.0-3ubuntu0.4

Changelog

Version: 2.3.0-3ubuntu0.4 2026-01-13 21:07:50 UTC

  python-urllib3 (2.3.0-3ubuntu0.4) questing-security; urgency=medium

  * SECURITY REGRESSION: Zstandard missing attribute after CVE-2025-66471 fix.
    (LP: #2136906)
    - debian/patches/CVE-2025-66471-fix2.patch: Fall back if "needs_input" is
      not a zstd object attribute in src/urllib3/response.py.

 -- Hlib Korzhynskyy <email address hidden> Tue, 13 Jan 2026 09:29:02 -0330
Source diff to previous version
2136906 python3-urllib3 in 24.04 is now incompatible with shipped python3-zstandard
CVE-2025-66471 urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.0 and prior to 2.6.0, the Streaming API improperly handles highly co

Version: 2.3.0-3ubuntu0.3 2026-01-13 04:07:52 UTC

  python-urllib3 (2.3.0-3ubuntu0.3) questing-security; urgency=medium

  * SECURITY REGRESSION: Zstd issues after CVE-2025-66471 fix. (LP: #2136906)
    - debian/patches/CVE-2025-66471-fix1.patch: Revert zstd fix due to not
      being compatible with zstandard.

 -- Hlib Korzhynskyy <email address hidden> Mon, 12 Jan 2026 15:50:53 -0330
Source diff to previous version
2136906 python3-urllib3 in 24.04 is now incompatible with shipped python3-zstandard
CVE-2025-66471 urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.0 and prior to 2.6.0, the Streaming API improperly handles highly co

Version: 2.3.0-3ubuntu0.2 2026-01-12 21:08:50 UTC

  python-urllib3 (2.3.0-3ubuntu0.2) questing-security; urgency=medium

  * SECURITY UPDATE: Decompression bomb in HTTP redirect responses.
    - debian/patches/CVE-2026-21441.patch: Add decode_content to self.read()
      in src/urllib3/response.py. Add tests in
      test/with_dummyserver/test_connectionpool.py and dummyserver/app.py.
    - CVE-2026-21441

 -- Hlib Korzhynskyy <email address hidden> Thu, 08 Jan 2026 14:32:03 -0330
Source diff to previous version
CVE-2026-21441 urllib3 is an HTTP client library for Python. urllib3's streaming API is designed for the efficient handling of large HTTP responses by reading the c

Version: 2.3.0-3ubuntu0.1 2025-12-12 01:08:32 UTC

  python-urllib3 (2.3.0-3ubuntu0.1) questing-security; urgency=medium

  * SECURITY UPDATE: Denial of service due to unbounded decompression chain.
    - debian/patches/CVE-2025-66418.patch: Add max_decode_links limit and
      checks in src/urllib3/response.py. Add test in test/test_response.py.
    - CVE-2025-66418
  * SECURITY UPDATE: Denial of service due to decompression bomb.
    - debian/patches/CVE-2025-66471.patch: Fix decompression bomb in
      src/urllib3/response.py. Add tests in test/test_response.py.
    - debian/patches/CVE-2025-66471-post1.patch: Remove brotli version warning
      due to intrusive backport for brotli fixes and upstream version warning
      not being appropriate for distro backporting.
    - CVE-2025-66471

 -- Hlib Korzhynskyy <email address hidden> Wed, 10 Dec 2025 12:29:16 -0330
CVE-2025-66418 urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.24 and prior to 2.6.0, the number of links in the decompression chai
CVE-2025-66471 urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.0 and prior to 2.6.0, the Streaming API improperly handles highly co


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