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Fedora 44 Python3.9 Important Code Execution Fixes 2026-14a63ba868

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Calendar Grey March 7, 2026
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Critical security fixes for Fedora 44 Python 3.9 to address multiple CVEs impacting functionality and security.
Security fixes for CVE-2026-1299, CVE-2026-0865, CVE-2025-15366 and CVE-2025-1536

Summary

Python 3.9 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 python3.9 package provides the "python3.9" executable: the reference

interpreter for the Python language, version 3.

The majority of its standard library is provided in the python3.9-libs package,

which should be installed automatically along with python3.9.

The remaining parts of the Python standard library are broken out into the

python3.9-tkinter and python3.9-test packages, which may need to be installed

separately.

Documentation for Python is provided in the python3.9-docs package.

Packages containing additional libraries for Python are generally named with

the "python3.9-" prefix.

Update Information:

Security fixes for CVE-2026-1299, CVE-2026-0865, CVE-2025-15366 and CVE-2025-1536

Topics%20covered

Topics Covered

security advisory security issue fedora code execution important python3

Change Log

* Tue Feb 10 2026 Tom\u0161 Hrn\u010diar - 3.9.25-6 - Security fix for CVE-2026-1299 * Mon Feb 9 2026 Tom\u0161 Hrn\u010diar - 3.9.25-5 - Security fixes for CVE-2026-0865, CVE-2025-15366 and CVE-2025-15367

References

Fedora Update Notification FEDORA-2026-14a63ba868 2026-03-07 00:17:58.501261+00:00
Name : python3.9 Product : Fedora 44 Version : 3.9.25 Release : 6.fc44 URL : https://www.python.org/ Summary : Version 3.9 of the Python interpreter Description : Python 3.9 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 python3.9 package provides the "python3.9" executable: the reference interpreter for the Python language, version 3. The majority of its standard library is provided in the python3.9-libs package, which should be installed automatically along with python3.9. The remaining parts of the Python standard library are broken out into the python3.9-tkinter and python3.9-test packages, which may need to be installed separately.
Documentation for Python is provided in the python3.9-docs package.
Packages containing additional libraries for Python are generally named with the "python3.9-" prefix.

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-14a63ba868' 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

Severity
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Name: python3.9
Product: Fedora 44
Version: 3.9.25
Release: 6.fc44
URL: https://www.python.org/
Summary: Version 3.9 of the Python interpreter

Topics%20covered

Topics Covered

security advisory security issue fedora code execution important python3

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