CVE-2026-0540

Name	CVE-2026-0540
Description	DOMPurify 3.1.3 through 3.3.1 and 2.5.3 through 2.5.8, fixed in commit 729097f, contain a cross-site scripting vulnerability that allows attackers to bypass attribute sanitization by exploiting five missing rawtext elements (noscript, xmp, noembed, noframes, iframe) in the SAFE_FOR_XML regex. Attackers can include payloads like </noscript><img src=x onerror=alert(1)> in attribute values to execute JavaScript when sanitized output is placed inside these unprotected rawtext contexts.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
node-dompurify (PTS)	bookworm	2.4.1+dfsg+~2.4.0-2+deb12u1	vulnerable
	bookworm (security)	2.4.1+dfsg+~2.4.0-2	vulnerable
	forky, sid, trixie	3.1.7+dfsg+~3.0.5-2	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
node-dompurify	source	(unstable)	(unfixed)

Fixed by: https://github.com/cure53/DOMPurify/commit/729097f63a78e3e0e9f771e648f462bee100e78f