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Fedora 43 python3-docs Security Issues Advisory 2026-27ce708600

New minor version of the Python interpreter, bringing also security fixes. 389-ds-base: Fix system index configuration issues 389-ds-base: Fix AttributeError: 'CustomHelpFormatter' object has no attribute '_format_actions_usage'. -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2026-27ce708600 2026-02-26 01:08:36.076630+00:00 -------------------------------------------------------------------------------- Name : python3-docs Product : Fedora 43 Version : 3.14.3 Release : 1.fc43 URL : https://www.python.org/ Summary : Documentation for the Python 3 programming language Description : The python3-docs package contains documentation on the Python 3 programming language and interpreter. -------------------------------------------------------------------------------- Update Information: New minor version of the Python interpreter, bringing also security fixes. 389-ds-base: Fix system index configuration issues 389-ds-base: Fix AttributeError: 'CustomHelpFormatter' object has no attribute '_format_actions_usage' -------------------------------------------------------------------------------- ChangeLog: * Wed Feb 4 2026 Karolina Surma - 3.14.3-1 - Update to Python 3.14.3 * Sat Jan 17 2026 Fedora Release Engineering - 3.14.2-2 - Rebuilt for https://fedoraproject.org/wiki/Fedora_44_Mass_Rebuild -------------------------------------------------------------------------------- References: [ 1 ] Bug #2424574 - 389-ds-base fails to build with Python 3.15: AttributeError: 'CustomHelpFormatter' object has no attribute '_format_actions_usage' https://bugzilla.redhat.com/show_bug.cgi?id=2424574 [ 2 ] Bug #2431825 - CVE-2025-11468 python3.14: Missing character filtering in Python [fedora-43] https://bugzilla.redhat.com/show_bug.cgi?id=2431825 [ 3 ] Bug #2431837 - CVE-2026-0672 python3.14: Header injection in http.cookies.Morsel in Python [fedora-43] https://bugzilla.redhat.com/show_bug.cgi?id=2431837 [ 4 ] Bug #2431838 - CVE-2026-0865 python3.14: wsgiref.headers.Headers allows header newline injection in Python [fedora-43] https://bugzilla.redhat.com/show_bug.cgi?id=2431838 [ 5 ] Bug #2431851 - CVE-2025-15282 python3.14: Header injection via newlines in data URL mediatype in Python [fedora-43] https://bugzilla.redhat.com/show_bug.cgi?id=2431851 [ 6 ] Bug #2433829 - CVE-2026-1299 python3.14: email header injection due to unquoted newlines [fedora-43] https://bugzilla.redhat.com/show_bug.cgi?id=2433829 [ 7 ] Bug #2436933 - ipa-healthcheck claims that system indexes are missing or incorrect https://bugzilla.redhat.com/show_bug.cgi?id=2436933 -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-27ce708600' 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 All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/keys -------------------------------------------------------------------------------- -- _______________________________________________ package-announce mailing list -- This email address is being protected from spambots. You need JavaScript enabled to view it. To unsubscribe send an email to This email address is being protected from spambots. You need JavaScript enabled to view it. Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/This email address is being protected from spambots. You need JavaScript enabled to view it. Do not reply to spam, report it: https://forge.fedoraproject.org/infra/tickets/issues/new . Explore the latest Fedora 43 update for python3-docs, fixing security issues including header injectionvulnerabilities.. Python Documentation Update Fedora Security Fix 2026. . Severity: Important. LinuxSecurity.com Team

Feb 26, 2026 •Important Fedora