CVE-2020-26870
CVE-2020-26870
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 6.1 · Medium · EPSS 4.9% · Fix available
- Published
- Updated
Affected products and versions
n/a
- Versions
- n/a: Affected
No fix published
dompurify npm
- Affected ranges
- SEMVER: < 2.0.17
Update to 2.0.17
dompurify.js Ubuntu:16.04:LTS
- Versions
- 0.7.3~dfsg1-1
- 0.7.3~dfsg1-2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
dompurify.js Ubuntu:18.04:LTS
- Versions
- 0.9.0~dfsg1-1
- 0.9.0~dfsg1-2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
Original sources
- 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
- https://nvd.nist.gov/vuln/detail/CVE-2020-26870