Fedora alert FEDORA-2026-43577dc43b (mingw-python3)

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[SECURITY] Fedora 43 Update: mingw-python3-3.11.15-4.fc43
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Tue, 28 Apr 2026 01:00:25 +0000
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<20260428010025.70FEA67572@bastion01.rdu3.fedoraproject.org>
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Article
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Fedora Update Notification
FEDORA-2026-43577dc43b
2026-04-28 00:55:52.209260+00:00
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Name        : mingw-python3
Product     : Fedora 43
Version     : 3.11.15
Release     : 4.fc43
URL         : https://www.python.org/
Summary     : MinGW Windows python3
Description :
MinGW Windows python3

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Update Information:

Backport fix for CVE-2026-4786.
Backport fixes for CVE-2026-6100, CVE-2026-3479, CVE-2026-1502
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ChangeLog:

* Sat Apr 18 2026 Sandro Mani <manisandro@gmail.com> - 3.11.15-4
- Backport fix for CVE-2026-4786
* Tue Apr 14 2026 Sandro Mani <manisandro@gmail.com> - 3.11.15-3
- Backport fixes for CVE-2026-6100, CVE-2026-3479, CVE-2026-1502
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References:

  [ 1 ] Bug #2449254 - CVE-2026-3479 mingw-python3: Python pkgutil.get_data(): Path Traversal via
improper resource argument validation [fedora-all]
        https://bugzilla.redhat.com/show_bug.cgi?id=2449254
  [ 2 ] Bug #2457939 - CVE-2026-1502 mingw-python3: Python: HTTP header injection via CR/LF in
proxy tunnel headers [fedora-all]
        https://bugzilla.redhat.com/show_bug.cgi?id=2457939
  [ 3 ] Bug #2458011 - CVE-2026-6100 mingw-python3: Python: Arbitrary code execution or information
disclosure via use-after-free in decompression modules [fedora-all]
        https://bugzilla.redhat.com/show_bug.cgi?id=2458011
  [ 4 ] Bug #2458219 - CVE-2026-4786 mingw-python3: Python: Arbitrary code execution via command
injection in webbrowser.open() API [fedora-all]
        https://bugzilla.redhat.com/show_bug.cgi?id=2458219
--------------------------------------------------------------------------------

This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2026-43577dc43b' at the command
line. For more information, refer to the dnf documentation available at
http://dnf.readthedocs.io/en/latest/command_ref.html#upgr...

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
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