Skip to content
OpenAdvisories
High RHSA-2026:90326 1 CVE

Red Hat Security Advisory: python-lxml security update

Published Nov 13, 2026 · Updated Nov 13, 2026

Ecosystem: Red Hat

Fixed packages 8

ReleasePackageFixed in
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::appstream python-lxml 0:4.2.3-2.el8_4.1
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::appstream python-lxml-debugsource 0:4.2.3-2.el8_4.1
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::appstream python3-lxml 0:4.2.3-2.el8_4.1
Red Hat · RHEL 8.4 AUS rhel_aus:8.4::appstream python3-lxml-debuginfo 0:4.2.3-2.el8_4.1
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::appstream python-lxml 0:4.2.3-2.el8_4.1
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::appstream python-lxml-debugsource 0:4.2.3-2.el8_4.1
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::appstream python3-lxml 0:4.2.3-2.el8_4.1
Red Hat · RHEL 8.4 EUS Long Life rhel_eus_long_life:8.4::appstream python3-lxml-debuginfo 0:4.2.3-2.el8_4.1

Vulnerabilities 1

  • High 8.2
    CVE-2026-49825

    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…

    lxml fedora-python lxml_html_clean lxml Debian Ubuntu Azure Linux PyPI

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2520368
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_90326.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-49825
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-49825
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-49825
  • article
    https://github.com/fedora-python/lxml_html_clean/commit/322357ac61c6cf80fcbaba53b4e92e31f3ded9f2
  • article
    https://github.com/fedora-python/lxml_html_clean/releases/tag/0.4.5
  • article
    https://github.com/fedora-python/lxml_html_clean/security/advisories/GHSA-4jhm-jv67-739f
  • article
    https://github.com/lxml/lxml/commit/5927a6d5e851845140975d99b65461e255caaab0
  • article
    https://github.com/lxml/lxml/releases/tag/lxml-6.1.1