Fedora 43 Python 3.14 Critical DoS Vulnerability Fix FEDORA-2026-b17b2a984a
fedora
June 27, 2026
New Python release including bugfixes and security fixes.
Summary
Python 3.14 is an accessible, high-level, dynamically typed, interpreted
programming language, designed with an emphasis on code readability.
It includes an extensive standard library, and has a vast ecosystem of
third-party libraries.
Update Information:
New Python release including bugfixes and security fixes.
Topics Covered
Change Log
* Thu Jun 11 2026 Karolina Surma
References
[ 1 ] Bug #2484199 - CVE-2026-7210 python3.14: Python/Expat: Denial of Service via crafted XML document [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2484199
[ 2 ] Bug #2484550 - CVE-2026-3276 python3.14: Python unicodedata: Denial of Service due to excessive CPU consumption [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2484550
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-b17b2a984a' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
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Severity
important
Lowest
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Critical
Name: python3.14
Product: Fedora 43
Version: 3.14.6
Release: 1.fc43
Summary: Version 3.14 of the Python interpreter
Topics Covered
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