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CVE CVE-2026-41239

CVE-2026-41239

Express

Severity: MEDIUM
CVSS: 6.8CVSS
Published: 2026-04-23
Last modified: 2026-04-23
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
CWE: CWE-79CWE-1289

Description

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Starting in version 1.0.10 and prior to version 3.4.0, `SAFE_FOR_TEMPLATES` strips `{{...}}` expressions from untrusted HTML. This works in string mode but not with `RETURN_DOM` or `RETURN_DOM_FRAGMENT`, allowing XSS via template-evaluating frameworks like Vue 2. Version 3.4.0 patches the issue.

References

https://github.com/cure53/DOMPurify/releases/tag/3.4.0
https://github.com/cure53/DOMPurify/security/advisories/GHSA-crv5-9vww-q3g8

Summary

Description

References