cure53/dompurify · Security
Cross-site Scripting in dompurify
- GHSA ID
- GHSA-63q7-h895-m982
- CVE ID
- CVE-2020-26870
- Severity
- medium
- Published
- Updated
- CVSS
- 6.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CVSS v3
- 6.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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.
CWEs
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
References
- https://nvd.nist.gov/vuln/detail/CVE-2020-26870 ↗
- 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://research.securitum.com/mutation-xss-via-mathml-mutation-dompurify-2-0-17-bypass/ ↗
- https://snyk.io/vuln/SNYK-JS-DOMPURIFY-1016634 ↗
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-26870 ↗
- https://www.oracle.com//security-alerts/cpujul2021.html ↗
- https://github.com/advisories/GHSA-63q7-h895-m982 ↗