Fedora 42 Python 3.14 Critical Fix for CVE-2026-4519 Command Injection
fedora
April 4, 2026
Security fix for CVE-2026-4519
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.
The python3.14 package provides the "python3.14" executable: the reference
interpreter for the Python language, version 3.
The majority of its standard library is provided in the python3.14-libs package,
which should be installed automatically along with python3.14.
The remaining parts of the Python standard library are broken out into the
python3.14-tkinter and python3.14-test packages, which may need to be installed
separately.
Documentation for Python is provided in the python3.14-docs package.
Packages containing additional libraries for Python are generally named with
the "python3.14-" prefix.
Update Information:
Security fix for CVE-2026-4519
Topics Covered
Change Log
* Thu Mar 26 2026 Lumr Balhar
References
[ 1 ] Bug #2449730 - CVE-2026-4519 python3.14: Python: Command-line option injection in webbrowser.open() via crafted URLs [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2449730
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-ba6745d242' 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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Name: python3.14
Product: Fedora 42
Version: 3.14.3
Release: 2.fc42
Summary: Version 3.14 of the Python interpreter
Topics Covered
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