RHSA-2026:19590HighCVSS 8.1

Red Hat Security Advisory: python3 security update

Published
May 20, 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 products50

  • Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • platform-python-0:3.6.8-39.el8_4.11.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • platform-python-0:3.6.8-39.el8_4.11.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • platform-python-0:3.6.8-39.el8_4.11.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • platform-python-0:3.6.8-39.el8_4.11.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • platform-python-debug-0:3.6.8-39.el8_4.11.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • platform-python-debug-0:3.6.8-39.el8_4.11.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • platform-python-debug-0:3.6.8-39.el8_4.11.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • platform-python-debug-0:3.6.8-39.el8_4.11.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • platform-python-devel-0:3.6.8-39.el8_4.11.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • platform-python-devel-0:3.6.8-39.el8_4.11.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • platform-python-devel-0:3.6.8-39.el8_4.11.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • platform-python-devel-0:3.6.8-39.el8_4.11.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • python3-0:3.6.8-39.el8_4.11.src as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • python3-0:3.6.8-39.el8_4.11.src as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • python3-debuginfo-0:3.6.8-39.el8_4.11.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • python3-debuginfo-0:3.6.8-39.el8_4.11.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • python3-debuginfo-0:3.6.8-39.el8_4.11.i686 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • python3-debuginfo-0:3.6.8-39.el8_4.11.i686 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • python3-debuginfo-0:3.6.8-39.el8_4.11.x86_64 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • python3-debuginfo-0:3.6.8-39.el8_4.11.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • python3-debuginfo-0:3.6.8-39.el8_4.11.x86_64 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • python3-debuginfo-0:3.6.8-39.el8_4.11.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • python3-debugsource-0:3.6.8-39.el8_4.11.i686 as a component of Red Hat Enterprise Linux AppStream AUS (v.8.4)
  • python3-debugsource-0:3.6.8-39.el8_4.11.i686 as a component of Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)
  • python3-debugsource-0:3.6.8-39.el8_4.11.i686 as a component of Red Hat Enterprise Linux BaseOS AUS (v.8.4)
  • python3-debugsource-0:3.6.8-39.el8_4.11.i686 as a component of Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)
  • +20 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)