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Fedora 43 Python 3.11.18 Fixes Tar and Certificate Issues

Linuxsecurity •LinuxSecurity Advisories • November 5, 2026

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Python 3.11 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 python3.11 package provides the "python3.11" executable: the reference

interpreter for the Python language, version 3.

The majority of its standard library is provided in the python3.11-libs package,

which should be installed automatically along with python3.11.

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

python3.11-tkinter and python3.11-test packages, which may need to be installed

Documentation for Python is provided in the python3.11-docs package.

Packages containing additional libraries for Python are generally named with

the "python3.11-" prefix.

New version of the Python interpreter

* Mon Oct 26 2026 Miro Hrončok - 3.11.18-1 - Update to Python 3.11.18 - CVE 2026-114583: tar filter allows writing outside destination via empty-named symlink - CVE 2026-115557: Distrust compromised intermediate certificates in ssl module

[ 1 ] Bug #2566950 - CVE-2026-114583 python3.11: python: Arbitrary file write via tarfile extraction filter bypass [fedora-43]

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-30d5bd99e3' at the command line. For more information, refer to the dnf documentation available at

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Multiple Python Versions in Fedora Address Tar and SSL Vulnerabilities Fedora has released updates for several Python versions (3.11, 3.13, 3.14, and 3.15) to address vulnerabilities related to tar file extraction and SSL certificate handling. CVE-2026-114583 allows arbitrary file writes via a tar filter, while CVE-2026-115557 distrusts compromised intermediate certificates, posing a significant risk to users. The vulnerabilities affect multiple Fedora releases, including Fedora 43 and 44. The updates were published on October 22 and 24, 2026, with patches available via the dnf update program. Users are urged to upgrade to the latest versions to mitigate these risks. The CVSS scores for these vulnerabilities indicate a medium to severity level, highlighting the need for immediate action. 5 sources 58

Extracted Entities

Fedora 43 Python 3.11.18 Fixes Tar and Certificate Issues

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Extracted Entities

Attack Types (1)

CVEs (1)

CWE Weaknesses (1)