VDB
DEBIAN-CVE-2026-41238
DEBIAN-CVE-2026-41238
PUBLISHED
CVSS 6.900000095367432 MEDIUM
DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Versions 3.0.1 through 3.3.3 are vulnerable to a prototype pollution-based XSS bypass. When an application uses `DOMPurify.sanitize()` with the default configuration (no `CUSTOM_ELEMENT_HANDLING` option), a prior prototype pollution gadget can inject permissive `tagNameCheck` and `attributeNameCheck` regex values into `Object.prototype`, causing DOMPurify to allow arbitrary custom elements with arbitrary attributes — including event handlers — through sanitization. Version 3.4.0 fixes the issue.
Risk Scores
CVSS 3.1
6.900000095367432
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | node-dompurify | 0, 3.3.3+dfsg-2, 3.3.3+dfsg-1 |
| Debian:13 | node-dompurify | 3.4.5+dfsg-1, 0, 3.1.7+dfsg+~3.0.5-2 |
| Debian:12 | node-dompurify | 3.1.7+dfsg+~3.0.5-1, 3.1.6+dfsg+~3.0.5-1, 3.0.9+dfsg+~3.0.5-1 |
Timeline
- Apr 23, 2026 CVE Published
- Oct 27, 2026 CVE Updated