Description
Cure53 DOMPurify before 2.0.17 allows mutation XSS. This occurs because a serialize-parse roundtrip does not necessarily return the original DOM tree, and a namespace can change from HTML to MathML, as demonstrated by nesting of FORM elements.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://research.securitum.com/mutation-xss-via-mathml-mutation-dompurify-2-0-17-bypass/ ↗
- https://github.com/cure53/DOMPurify/commit/02724b8eb048dd219d6725b05c3000936f11d62d ↗
- https://github.com/cure53/DOMPurify/compare/2.0.16...2.0.17 ↗
- https://lists.debian.org/debian-lts-announce/2020/10/msg00029.html ↗
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-26870 ↗
- https://www.oracle.com//security-alerts/cpujul2021.html ↗