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Fedora 42 python3.15 Key Command Injection Advisory FEDORA-2026-485183030a
fedora
April 20, 2026
New prerelease version
Summary
Python 3.15 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 python3.15 package provides the "python3.15" executable: the reference
interpreter for the Python language, version 3.
The majority of its standard library is provided in the python3.15-libs package,
which should be installed automatically along with python3.15.
The remaining parts of the Python standard library are broken out into the
python3.15-tkinter and python3.15-test packages, which may need to be installed
separately.
Documentation for Python is provided in the python3.15-docs package.
Packages containing additional libraries for Python are generally named with
the "python3.15-" prefix.
Update Information:
New prerelease version
Topics Covered
Change Log
* Wed Apr 8 2026 Karolina Surma
References
[ 1 ] Bug #2444708 - CVE-2026-2297 python3.15: CPython: Logging Bypass in Legacy .pyc File Handling [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2444708
[ 2 ] Bug #2448192 - CVE-2026-3644 python3.15: Incomplete control character validation in http.cookies [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2448192
[ 3 ] Bug #2448208 - CVE-2026-4224 python3.15: Stack overflow parsing XML with deeply nested DTD content models [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2448208
[ 4 ] Bug #2449260 - CVE-2026-3479 python3.15: Python pkgutil.get_data(): Path Traversal via improper resource argument validation [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2449260
[ 5 ] Bug #2449731 - CVE-2026-4519 python3.15: Python: Command-line option injection in webbrowser.open() via crafted URLs [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=2449731
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-485183030a' 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
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Critical
Name: python3.15
Product: Fedora 42
Version: 3.15.0~a8
Release: 1.fc42
Summary: Version 3.15 of the Python interpreter
Topics Covered
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