CVE-2020-26870
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.
- Score
- CVSS 3.1 6.1 Medium
- Status
- Modified - cve@mitre.org
- Published
- 2020-10-07
- Last modified
- 2024-08-04
- Weaknesses
- CWE-79
Affected products
- Dompurify (Cure53)
- Debian Linux (Debian)
- Visual Studio 2017 (Microsoft)
- Visual Studio 2019 (Microsoft)
- Application Express (Oracle)
References
- 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://research.securitum.com/mutation-xss-via-mathml-mutation-dompurify-2-0-17-bypass/
- https://www.oracle.com//security-alerts/cpujul2021.html
