RHSA-2026:50065: Important: python3 security update

Published Aug 4, 2026
·
Updated

Important: python3 security update

Other sources

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): python: Python: CPU Denial of Service in HTML parser via repeated unterminated markup declarations (CVE-2026-15308) 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.

— Red Hat

Affected Software

21 affected componentsFixes available
Red Hat Red Hat Enterprise Linux Server - AUS
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Life Cycle Long Life
redhat/python3<3.6.8-47.el8_6.14
3.6.8-47.el8_6.14
redhat/platform-python<3.6.8-47.el8_6.14
3.6.8-47.el8_6.14
redhat/platform-python<3.6.8-47.el8_6.14
3.6.8-47.el8_6.14
redhat/platform-python-debug<3.6.8-47.el8_6.14
3.6.8-47.el8_6.14
redhat/platform-python-debug<3.6.8-47.el8_6.14
3.6.8-47.el8_6.14
redhat/platform-python-devel<3.6.8-47.el8_6.14
3.6.8-47.el8_6.14
redhat/platform-python-devel<3.6.8-47.el8_6.14
3.6.8-47.el8_6.14
redhat/python3-debuginfo<3.6.8-47.el8_6.14
3.6.8-47.el8_6.14
redhat/python3-debuginfo<3.6.8-47.el8_6.14
3.6.8-47.el8_6.14
redhat/python3-debugsource<3.6.8-47.el8_6.14
3.6.8-47.el8_6.14
redhat/python3-debugsource<3.6.8-47.el8_6.14
3.6.8-47.el8_6.14
redhat/python3-idle<3.6.8-47.el8_6.14
3.6.8-47.el8_6.14
redhat/python3-idle<3.6.8-47.el8_6.14
3.6.8-47.el8_6.14
redhat/python3-libs<3.6.8-47.el8_6.14
3.6.8-47.el8_6.14
redhat/python3-libs<3.6.8-47.el8_6.14
3.6.8-47.el8_6.14
redhat/python3-test<3.6.8-47.el8_6.14
3.6.8-47.el8_6.14
redhat/python3-test<3.6.8-47.el8_6.14
3.6.8-47.el8_6.14
redhat/python3-tkinter<3.6.8-47.el8_6.14
3.6.8-47.el8_6.14
redhat/python3-tkinter<3.6.8-47.el8_6.14
3.6.8-47.el8_6.14

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/python3 to a version that resolves this vulnerability.

    Fixed in 3.6.8-47.el8_6.14
  2. Upgrade

    Upgrade redhat/platform-python to a version that resolves this vulnerability.

    Fixed in 3.6.8-47.el8_6.14
  3. Upgrade

    Upgrade redhat/platform-python-debug to a version that resolves this vulnerability.

    Fixed in 3.6.8-47.el8_6.14
  4. Upgrade

    Upgrade redhat/platform-python-devel to a version that resolves this vulnerability.

    Fixed in 3.6.8-47.el8_6.14
  5. Upgrade

    Upgrade redhat/python3-debuginfo to a version that resolves this vulnerability.

    Fixed in 3.6.8-47.el8_6.14
  6. Upgrade

    Upgrade redhat/python3-debugsource to a version that resolves this vulnerability.

    Fixed in 3.6.8-47.el8_6.14
  7. Upgrade

    Upgrade redhat/python3-idle to a version that resolves this vulnerability.

    Fixed in 3.6.8-47.el8_6.14
  8. Upgrade

    Upgrade redhat/python3-libs to a version that resolves this vulnerability.

    Fixed in 3.6.8-47.el8_6.14
  9. Upgrade

    Upgrade redhat/python3-test to a version that resolves this vulnerability.

    Fixed in 3.6.8-47.el8_6.14
  10. Upgrade

    Upgrade redhat/python3-tkinter to a version that resolves this vulnerability.

    Fixed in 3.6.8-47.el8_6.14

Event History

Aug 4, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·12:32 PM
Data Sourced
via Red Hat·12:32 PM
Severity
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RHSA-2026:50065 - Important: python3 security update - SecAlerts