CVE-2026-0540

DOMPurify 3.1.3 through 3.3.1 and 2.5.3 through 2.5.8, fixed in commit 2726c74, 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.

The following products are affected by CVE-2026-0540 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-0540.

URL	Resource
https://fluidattacks.com/advisories/daft
https://github.com/cure53/DOMPurify
https://github.com/cure53/DOMPurify/commit/302b51de22535cc90235472c52e3401bedd46f80
https://github.com/cure53/DOMPurify/commit/fca0a938b4261ddc9c0293a289935a9029c049f5
https://github.com/cure53/DOMPurify/releases/tag/3.3.2
https://nvd.nist.gov/vuln/detail/CVE-2026-0540
https://www.cve.org/CVERecord?id=CVE-2026-0540
https://www.vulncheck.com/advisories/dompurify-xss-via-missing-rawtext-elements-in-safe-for-xml
https://www.vulncheck.com/advisories/dompurify-xss-via-missing-rawtext-elements-in-safeforxml