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Fedora 43 Python 3.13 Critical Security Updates 2026-2deb979d80

fedora
Calendar Grey June 20, 2026
Dist Fedora Esm H88
Enhance your Fedora 43 with the latest Python 3.13.14 update, addressing critical security issues and bugfixes.
New Python release including bugfixes and security fixes.

Summary

Python 3.13 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.

The python3.13 package provides the "python3.13" executable: the reference

interpreter for the Python language, version 3.

The majority of its standard library is provided in the python3.13-libs package,

which should be installed automatically along with python3.13.

The remaining parts of the Python standard library are broken out into the

python3.13-tkinter and python3.13-test packages, which may need to be installed

separately.

Documentation for Python is provided in the python3.13-docs package.

Packages containing additional libraries for Python are generally named with

the "python3.13-" prefix.

Update Information:

New Python release including bugfixes and security fixes.

Topics%20covered

Topics Covered

security advisory denial of service fedora arbitrary execution bugfixes python3.13

Change Log

* Thu Jun 11 2026 Karolina Surma - 3.13.14-1 - Update to Python 3.13.14

References


[ 1 ] Bug #2457943 - CVE-2026-1502 python3.13: Python: HTTP header injection via CR/LF in proxy tunnel headers [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2457943 [ 2 ] Bug #2458015 - CVE-2026-6100 python3.13: Python: Arbitrary code execution or information disclosure via use-after-free in decompression modules [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2458015 [ 3 ] Bug #2458223 - CVE-2026-4786 python3.13: Python: Arbitrary code execution via command injection in webbrowser.open() API [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2458223 [ 4 ] Bug #2484194 - CVE-2026-7210 python3.13: Python/Expat: Denial of Service via crafted XML document [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2484194 [ 5 ] Bug #2484559 - CVE-2026-3276 python3.13: Python unicodedata: Denial of Service due to excessive CPU consumption [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2484559

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-2deb979d80' 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

Severity
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Name: python3.13
Product: Fedora 43
Version: 3.13.14
Release: 1.fc43
URL: https://www.python.org/
Summary: Version 3.13 of the Python interpreter

Topics%20covered

Topics Covered

security advisory denial of service fedora arbitrary execution bugfixes python3.13

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