Fedora 42 python3.10 Essential Command Injection Remedy 2026-bfc2aeben63
fedora
March 7, 2026
Security fixes for CVE-2026-1299, CVE-2026-0865, CVE-2025-15366 and CVE-2025-15367
Summary
Python 3.10 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 python3.10 package provides the "python3.10" executable: the reference
interpreter for the Python language, version 3.
The majority of its standard library is provided in the python3.10-libs package,
which should be installed automatically along with python3.10.
The remaining parts of the Python standard library are broken out into the
python3.10-tkinter and python3.10-test packages, which may need to be installed
separately.
Documentation for Python is provided in the python3.10-docs package.
Packages containing additional libraries for Python are generally named with
the "python3.10-" prefix.
Update Information:
Security fixes for CVE-2026-1299, CVE-2026-0865, CVE-2025-15366 and CVE-2025-15367
Topics Covered
Change Log
* Mon Feb 9 2026 Tom\u0161 Hrn\u010diar
References
[ 1 ] Bug #2431615 - CVE-2025-15366 python3.10: IMAP command injection in user-controlled commands [fedora-42]
https://bugzilla.redhat.com/show_bug.cgi?id=2431615
[ 2 ] Bug #2431639 - CVE-2025-15367 python3.10: POP3 command injection in user-controlled commands [fedora-42]
https://bugzilla.redhat.com/show_bug.cgi?id=2431639
[ 3 ] Bug #2431788 - CVE-2026-0865 python3.10: wsgiref.headers.Headers allows header newline injection in Python [fedora-42]
https://bugzilla.redhat.com/show_bug.cgi?id=2431788
[ 4 ] Bug #2433815 - CVE-2026-1299 python3.10: email header injection due to unquoted newlines [fedora-42]
https://bugzilla.redhat.com/show_bug.cgi?id=2433815
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-ef5d97522f' 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: python3.10
Product: Fedora 42
Version: 3.10.19
Release: 4.fc42
Summary: Version 3.10 of the Python interpreter
Topics Covered
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