CVE-2026-41239
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.
SeverityMedium
CVSS6.8
Exploit probability—
ProductDompurify
PublishedApr 23, 2026
First seenApr 23, 2026
Weakness typeCWE-79Cross-site scripting (XSS)CWE-1289CWE-1289
How to fix
Update
- dompurify3.4.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| dompurifynpm | 1.0.10 ≤ v < 3.4.0 | 3.4.0 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.