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High ALSA-2026:67943 1 CVE

Important: python-lxml security update

Published Sep 16, 2026 · Updated Oct 29, 2026

Summary

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):

* lxml: lxml-html-clean: lxml: URL bypass vulnerability in Cleaner via missing xlink:href (CVE-2026-49825)

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.

Fixed packages 1

ReleasePackageFixed in
AlmaLinux · 8 python3-lxml 4.2.3-5.el8_10

Vulnerabilities 1

  • High 8.2

    lxml: javascript: URL bypass in Cleaner via xlink:href

    lxml is a library for processing XML and HTML in the Python language. Prior to 6.1.1, link attributes in ``lxml.html.defs.link_attrs`` were missing ``xlink:href``, which can be used for URL bypass attacks in embedded SVG/MathML/etc. content. This vulnerabilit…

References

  • report
    https://access.redhat.com/security/cve/CVE-2026-49825
  • report
    https://bugzilla.redhat.com/2520368
  • advisory
    https://errata.almalinux.org/8/ALSA-2026-67943.html