CVE-2026-41239

unknown

Published 2026-04-22 · Modified 2026-05-05

CVSS v3

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

CVSS v2

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VIR risk

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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.

Predictions

Exploit likelihood

30%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-41239

OS impact

OS	Version	Status	Fixed in
debian	bookworm	affected
debian	forky	fixed	`3.4.1+dfsg-1`
debian	sid	fixed	`3.4.1+dfsg-1`
debian	trixie	affected

Package impact

Ecosystem	Package	Vulnerable	Fixed
npm	dompurify	`>=1.0.10,<3.4.0`	`3.4.0`

References

Verify integrity in audit chain (admin only). AS-IS.