CVE-2026-41239

MEDIUM

DOMPurify has a SAFE_FOR_TEMPLATES bypass in RETURN_DOM mode

Title source: CVE List
STIX 2.1 vulnerability

Record summary

CVE-2026-41239 has a selected CVSS score of 6.8 (medium).

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.

Description source: CVE List

Exploitation context

CISA SSVC decision

ExploitationNone
AutomatableNo
Technical impactTotal

CISA Coordinator · SSVC 2.0.3 · Evaluated Apr 25, 2026 · Source: CVE List

Affected products and versions

2
ProductSourceVersion range

DOMPurify

Browse cure53 / DOMPurify
CVE List>= 1.0.10, < 3.4.0affected

dompurify

Browse npm / dompurify
GitHub Advisory1.0.10 to < 3.4.0 · Fixed in 3.4.0affected

References

4