Fedora 43 Python 3.13 Fixes Severe Command Injection Flaw CVE-2026-4519
fedora
March 29, 2026
Security fix for CVE-2026-4519.
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:
Security fix for CVE-2026-4519.
Topics Covered
Change Log
* Thu Mar 26 2026 Lumr Balhar
References
[ 1 ] Bug #2449729 - CVE-2026-4519 python3.13: Python: Command-line option injection in webbrowser.open() via crafted URLs [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2449729
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-f373d5f528' 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
Low
Medium
High
Critical
Name: python3.13
Product: Fedora 43
Version: 3.13.12
Release: 2.fc43
Summary: Version 3.13 of the Python interpreter
Topics Covered
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