CVE-2026-41239

MEDIUM

DOMPurify 1.0.10-3.3.x RETURN_DOM - SAFE_FOR_TEMPLATES Bypass

Title source: manual
STIX 2.1

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)

Core 2
Core References
X_Refsource_Misc x_refsource_misc
https://github.com/cure53/DOMPurify/releases/tag/3.4.0

Scores

CVSS v3 6.8
EPSS 0.0022
EPSS Percentile 11.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-1289 CWE-79
Status published
Products (2)
cure53/DOMPurify >= 1.0.10, < 3.4.0
npm/dompurify 1.0.10 - 3.4.0npm
Published Apr 23, 2026
Tracked Since Apr 23, 2026