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Upgrade bundled Expat to 2.7.2 (e.g. for the fix to CVE-2025-59375)聽#138998

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@hartwork

Bug report

Bug description:

Hi! 馃憢

Please upgrade bundled Expat to 2.7.2 (e.g. for the fix to CVE-2025-59375).

The CPython issue for previous 2.7.1 was #131809 and the related merged main pull request was #132192, in case you want to have a look. (The Dockerfile from comment #123689 (review) could be of help with raising confidence in a bump pull request when going forward.)

Thanks in advance!

CC @sethmlarson @gpshead

CPython versions tested on:

3.9, 3.10, 3.11, 3.12, 3.13, 3.14, 3.15, CPython main branch

Operating systems tested on:

Linux, macOS, Windows, Other

Linked PRs

Activity

  1. added
    dependenciesPull requests that update a dependency file
    3.11only security fixes
    3.12only security fixes
    3.13only security fixes
    3.14bugs and security fixes
    3.15bugs and security fixes
    and removed
    type-bugAn unexpected behavior, bug, or error
    dependenciesPull requests that update a dependency file
    on Sep 16, 2025
  2. 24 remaining items

  3. added a commit that references this issue on Oct 6, 2025
  4. reopened this on Oct 7, 2025
  5. picnixz commented on Oct 7, 2025

    @picnixz
    Member

    After an other discussion, it was decided that it was fine to backport 2.7.2 and keep the default values.

    cc @ambv

  6. added a commit that references this issue on Oct 7, 2025
  7. hartwork commented on Oct 7, 2025

    @hartwork
    ContributorAuthor

    @picnixz seems to be about 3.9. How about Expat 2.7.3? Will you backport or should I (later today)? I checked #139312 just now but don't see anything 3.9 yet.

  8. hartwork commented on Oct 7, 2025

    @hartwork
    ContributorAuthor

    @picnixz update: Found the answer at #139312 (comment) myself now 馃憤

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