Issued:
2026-04-27
Updated:
2026-04-27

RHSA-2026:10950 - Important: python3.12 security update

Synopsis

Important: python3.12 security update

Type/Severity

Security Advisory Important

Topic

An update for python3.12 is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

Python is an interpreted, interactive, object-oriented programming language, which includes modules, classes, exceptions, very high level dynamic data types and dynamic typing. Python supports interfaces to many system calls and libraries, as well as to various windowing systems.

Security Fix(es):

  • expat: libexpat in Expat allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing (CVE-2025-59375)

  • python: Quadratic complexity in os.path.expandvars() with user-controlled template (CVE-2025-6075)

  • cpython: Out-of-memory when loading Plist (CVE-2025-13837)

  • cpython: Header injection via newlines in data URL mediatype in Python (CVE-2025-15282)

  • cpython: Header injection in http.cookies.Morsel in Python (CVE-2026-0672)

  • cpython: CPython: Logging Bypass in Legacy .pyc File Handling (CVE-2026-2297)

  • cpython: Incomplete control character validation in http.cookies (CVE-2026-3644)

  • cpython: Stack overflow parsing XML with deeply nested DTD content models (CVE-2026-4224)

  • python: Python: HTTP header injection via CR/LF in proxy tunnel headers (CVE-2026-1502)

  • python: Python: Arbitrary code execution or information disclosure via use-after-free in decompression modules (CVE-2026-6100)

  • python: cpython: Python: Arbitrary code execution via command injection in webbrowser.open() API (CVE-2026-4786)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for x86_648x86_64
Red Hat Enterprise Linux for x86_64 - Extended Life Cycle8.10x86_64
Red Hat Enterprise Linux for Power, little endian8ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle8.10ppc64le
Red Hat Enterprise Linux for IBM z Systems8s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle8.10s390x
Red Hat Enterprise Linux for ARM 648aarch64
Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle8.10aarch64
Red Hat CodeReady Linux Builder for x86_648x86_64
Red Hat CodeReady Linux Builder for Power, little endian8ppc64le
Red Hat CodeReady Linux Builder for IBM z Systems8s390x
Red Hat CodeReady Linux Builder for ARM 648aarch64

Updated Packages

  • python3.12-3.12.13-2.el8_10.aarch64.rpm
  • python3.12-debug-3.12.13-2.el8_10.ppc64le.rpm
  • python3.12-3.12.13-2.el8_10.i686.rpm
  • python3.12-debug-3.12.13-2.el8_10.x86_64.rpm
  • python3.12-3.12.13-2.el8_10.src.rpm
  • python3.12-debugsource-3.12.13-2.el8_10.aarch64.rpm
  • python3.12-3.12.13-2.el8_10.s390x.rpm
  • python3.12-debugsource-3.12.13-2.el8_10.x86_64.rpm
  • python3.12-test-3.12.13-2.el8_10.ppc64le.rpm
  • python3.12-test-3.12.13-2.el8_10.s390x.rpm
  • python3.12-debugsource-3.12.13-2.el8_10.ppc64le.rpm
  • python3.12-devel-3.12.13-2.el8_10.i686.rpm
  • python3.12-tkinter-3.12.13-2.el8_10.i686.rpm
  • python3.12-devel-3.12.13-2.el8_10.ppc64le.rpm
  • python3.12-tkinter-3.12.13-2.el8_10.ppc64le.rpm
  • python3.12-3.12.13-2.el8_10.x86_64.rpm
  • python3.12-tkinter-3.12.13-2.el8_10.aarch64.rpm
  • python3.12-tkinter-3.12.13-2.el8_10.s390x.rpm
  • python3.12-debug-3.12.13-2.el8_10.aarch64.rpm
  • python3.12-idle-3.12.13-2.el8_10.aarch64.rpm
  • python3.12-devel-3.12.13-2.el8_10.x86_64.rpm
  • python3.12-libs-3.12.13-2.el8_10.x86_64.rpm
  • python3.12-devel-3.12.13-2.el8_10.aarch64.rpm
  • python3.12-debuginfo-3.12.13-2.el8_10.ppc64le.rpm
  • python3.12-tkinter-3.12.13-2.el8_10.x86_64.rpm
  • python3.12-idle-3.12.13-2.el8_10.x86_64.rpm
  • python3.12-debug-3.12.13-2.el8_10.i686.rpm
  • python3.12-debugsource-3.12.13-2.el8_10.s390x.rpm
  • python3.12-idle-3.12.13-2.el8_10.s390x.rpm
  • python3.12-3.12.13-2.el8_10.ppc64le.rpm
  • python3.12-devel-3.12.13-2.el8_10.s390x.rpm
  • python3.12-debuginfo-3.12.13-2.el8_10.s390x.rpm
  • python3.12-debug-3.12.13-2.el8_10.s390x.rpm
  • python3.12-debuginfo-3.12.13-2.el8_10.aarch64.rpm
  • python3.12-idle-3.12.13-2.el8_10.i686.rpm
  • python3.12-libs-3.12.13-2.el8_10.i686.rpm
  • python3.12-libs-3.12.13-2.el8_10.s390x.rpm
  • python3.12-rpm-macros-3.12.13-2.el8_10.noarch.rpm
  • python3.12-test-3.12.13-2.el8_10.aarch64.rpm
  • python3.12-test-3.12.13-2.el8_10.x86_64.rpm
  • python3.12-debugsource-3.12.13-2.el8_10.i686.rpm
  • python3.12-idle-3.12.13-2.el8_10.ppc64le.rpm
  • python3.12-libs-3.12.13-2.el8_10.aarch64.rpm
  • python3.12-libs-3.12.13-2.el8_10.ppc64le.rpm
  • python3.12-test-3.12.13-2.el8_10.i686.rpm
  • python3.12-debuginfo-3.12.13-2.el8_10.x86_64.rpm
  • python3.12-debuginfo-3.12.13-2.el8_10.i686.rpm

Fixes

CVEs

References

Additional information