Fedora 42 python3.6 Critical Injection Flaws Fix FEDORA-2026-f5514402fd
fedora
February 10, 2026
Security fixes for CVE-2026-0865, CVE-2025-15366, CVE-2025-15367, CVE-2026-1299
Summary
Python 3.6 package for developers.
This package exists to allow developers to test their code against an older
version of Python. This is not a full Python stack and if you wish to run
your applications with Python 3.6, see other distributions
that support it, such as CentOS or RHEL with Software Collections
or older Fedora releases.
Update Information:
Security fixes for CVE-2026-0865, CVE-2025-15366, CVE-2025-15367, CVE-2026-1299
Topics Covered
Change Log
* Thu Jan 29 2026 Lumr Balhar
References
[ 1 ] Bug #2431621 - CVE-2025-15366 python3.6: IMAP command injection in user-controlled commands [fedora-42]
https://bugzilla.redhat.com/show_bug.cgi?id=2431621
[ 2 ] Bug #2431645 - CVE-2025-15367 python3.6: POP3 command injection in user-controlled commands [fedora-42]
https://bugzilla.redhat.com/show_bug.cgi?id=2431645
[ 3 ] Bug #2431805 - CVE-2026-0865 python3.6: wsgiref.headers.Headers allows header newline injection in Python [fedora-42]
https://bugzilla.redhat.com/show_bug.cgi?id=2431805
[ 4 ] Bug #2433821 - CVE-2026-1299 python3.6: email header injection due to unquoted newlines [fedora-42]
https://bugzilla.redhat.com/show_bug.cgi?id=2433821
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-f5514402fd' 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
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Critical
Name: python3.6
Product: Fedora 42
Version: 3.6.15
Release: 52.fc42
Summary: Version 3.6 of the Python interpreter
Topics Covered
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