DOMPurify has a SAFE_FOR_TEMPLATES bypass in RETURN_DOM mode_CVE-2026-41239

6.8 / 10

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

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.

Basic Information

ID CVE-2026-41239

Source GitHub_M

Published Apr 23, 2026 at 14:47

Affected Product

Vendor cure53

Product DOMPurify

Version >= 1.0.10, < 3.4.0

Affected Versions cure53 DOMPurify >= 1.0.10, < 3.4.0

CWE Classification

CWE-79 CWE-1289

References

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    "published": "2026-04-23T14:47:56.129Z",
    "modified": "2026-04-23T14:47:56.129Z",
    "type": "cve",
    "title": "DOMPurify has a SAFE_FOR_TEMPLATES bypass in RETURN_DOM mode",
    "source": "GitHub_M",
    "references": "https://github.com/cure53/DOMPurify/security/advisories/GHSA-crv5-9vww-q3g8\nhttps://github.com/cure53/DOMPurify/releases/tag/3.4.0",
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