Sourced from lxml's changelog.

6.1.1 (2026-05-18)

Bugs fixed

• The known 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. https://github.com/fedora-python/lxml_html_clean/security/advisories/GHSA-4jhm-jv67-739f

• The Linux wheels use a patched libxslt 1.1.43, fixing CVE-2025-7424 and CVE-2025-11731.

• The Windows wheels use libxslt 1.1.45, fixing CVE-2025-7424 and CVE-2025-11731.

• b4a4c59 Build: Fix build in Py3.8.
• a116dcb Fix typo: type annotions -> type annotations in PEP 560 comments (GH-504)
• 7287a75 Prepare release of 6.1.1.
• 5927a6d Add missing "xlink:href" to the known HTML link attributes.
• 23efeb4 Build: Fix build in Py3.8.
• 2c0563b Build: Add bug patch for libxslt 1.1.43 and apply it during the static librar...
• 8a35fcc Fix doctest in PyPy3.9.
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