GHSA-v2wj-7wpq-c8vv

DOMPurify contains a Cross-site Scripting vulnerability

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-0540

Packages

Ecosystem	Package	Affected	Fixed in
npm	dompurify	>= 3.1.3, < 3.3.2	3.3.2
npm	dompurify	>= 2.5.3, < 2.5.9	2.5.9

Details

As written in the advisory (Markdown source, shown as plain text).

DOMPurify 3.1.3 through 3.3.1 and 2.5.3 through 2.5.8, fixed in 2.5.9 and 3.3.2, 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.

References

External links from the advisory. They lead to third-party sites.

https://nvd.nist.gov/vuln/detail/CVE-2026-0540 advisory
https://github.com/cure53/DOMPurify/commit/302b51de22535cc90235472c52e3401bedd46f80 web
https://github.com/cure53/DOMPurify/commit/fca0a938b4261ddc9c0293a289935a9029c049f5 web
https://fluidattacks.com/advisories/daft web
https://github.com/cure53/DOMPurify package
https://github.com/cure53/DOMPurify/releases/tag/3.3.2 web
https://www.vulncheck.com/advisories/dompurify-xss-via-missing-rawtext-elements-in-safe-for-xml web