DOMPurify contains a Cross-site Scripting vulnerability
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.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-0540US | — | — | ||
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… | ||||
references
External citations — patches, advisories, analysis.
- https://fluidattacks.com/advisories/daftWEB
- https://github.com/cure53/DOMPurifyPACKAGE
- https://github.com/cure53/DOMPurify/commit/302b51de22535cc90235472c52e3401bedd46f80WEB
- https://github.com/cure53/DOMPurify/commit/fca0a938b4261ddc9c0293a289935a9029c049f5WEB
- https://github.com/cure53/DOMPurify/releases/tag/3.3.2WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-0540ADVISORY
- https://www.vulncheck.com/advisories/dompurify-xss-via-missing-rawtext-elements-in-safe-for-xmlWEB
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