RHSA-2026:10949HighCVSS 8.1

Red Hat Security Advisory: python3.9 security update

Published
April 27, 2026
Last Modified
August 10, 2026

🔗 CVE IDs covered (2)

CVE-2026-4786 →CVE-2026-6100 →

📋 Description

CVE-2026-4786 — python: cpython: Python: Arbitrary code execution via command injection in webbrowser.open() API CVE-2026-6100 — python: Python: Arbitrary code execution or information disclosure via use-after-free in decompression modules

🎯 Affected products70

  • Red Hat Enterprise Linux AppStream (v. 9)
  • Red Hat Enterprise Linux BaseOS (v. 9)
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • python-unversioned-command-0:3.9.25-3.el9_7.3.noarch as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • python3-0:3.9.25-3.el9_7.3.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • python3-0:3.9.25-3.el9_7.3.i686 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • python3-0:3.9.25-3.el9_7.3.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • python3-0:3.9.25-3.el9_7.3.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • python3-0:3.9.25-3.el9_7.3.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • python3-debug-0:3.9.25-3.el9_7.3.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • python3-debug-0:3.9.25-3.el9_7.3.i686 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • python3-debug-0:3.9.25-3.el9_7.3.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • python3-debug-0:3.9.25-3.el9_7.3.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • python3-debug-0:3.9.25-3.el9_7.3.x86_64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • python3-devel-0:3.9.25-3.el9_7.3.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • python3-devel-0:3.9.25-3.el9_7.3.i686 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • python3-devel-0:3.9.25-3.el9_7.3.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • python3-devel-0:3.9.25-3.el9_7.3.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • python3-devel-0:3.9.25-3.el9_7.3.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • python3-idle-0:3.9.25-3.el9_7.3.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • python3-idle-0:3.9.25-3.el9_7.3.i686 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • python3-idle-0:3.9.25-3.el9_7.3.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • python3-idle-0:3.9.25-3.el9_7.3.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • python3-idle-0:3.9.25-3.el9_7.3.x86_64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • python3-libs-0:3.9.25-3.el9_7.3.aarch64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • python3-libs-0:3.9.25-3.el9_7.3.i686 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • python3-libs-0:3.9.25-3.el9_7.3.ppc64le as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • python3-libs-0:3.9.25-3.el9_7.3.s390x as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • python3-libs-0:3.9.25-3.el9_7.3.x86_64 as a component of Red Hat Enterprise Linux BaseOS (v. 9)
  • python3-test-0:3.9.25-3.el9_7.3.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • +40 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

🔗 References (5)