CVE-2026-41239

MEDIUM

DOMPurify has a SAFE_FOR_TEMPLATES bypass in RETURN_DOM mode

Title source: cna

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 (2)

Scores

CVSS v3 6.8
EPSS 0.0005
EPSS Percentile 14.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

Details

CWE
CWE-1289 CWE-79
Status published
Products (1)
cure53/DOMPurify >= 1.0.10, < 3.4.0
Published Apr 23, 2026
Tracked Since Apr 23, 2026