lxml: javascript: URL bypass in Cleaner via xlink:href
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.2epss 0.2%
exploitation probability
0.2%top 85% of all CVEs
observed exploitation
nono source reports it
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 vulnerability was fixed in lxml 6.1.1 and lxml_html_clean 0.4.5.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
References
https://github.com/fedora-python/lxml_html_clean/commit/322357ac61c6cf80fcbaba53b4e92e31f3ded9f2https://github.com/fedora-python/lxml_html_clean/releases/tag/0.4.5https://github.com/fedora-python/lxml_html_clean/security/advisories/GHSA-4jhm-jv67-739fhttps://github.com/lxml/lxml/commit/5927a6d5e851845140975d99b65461e255caaab0https://github.com/lxml/lxml/releases/tag/lxml-6.1.1