CVE-2026-0540

MEDIUM 6.1

DOMPurify XSS via Missing Rawtext Elements in SAFE_FOR_XML

CVSS Score

6.1

EPSS Score

0.0%

EPSS Percentile

1th

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.

CWE	CWE-79
Vendor	cure53
Product	dompurify
Published	Mar 3, 2026
Last Updated	Mar 25, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

cure53 / DOMPurify

3.1.3 ≤ 3.3.1 2.5.3 ≤ 2.5.8

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/cure53/DOMPurify github.com: https://github.com/cure53/DOMPurify/commit/302b51de22535cc90235472c52e3401bedd46f80 github.com: https://github.com/cure53/DOMPurify/releases/tag/3.3.2 fluidattacks.com: https://fluidattacks.com/advisories/daft vulncheck.com: https://www.vulncheck.com/advisories/dompurify-xss-via-missing-rawtext-elements-in-safe-for-xml

Credits

Camilo Vera - Fluid Attacks Cristian Vargas - Fluid Attacks Scott Moore - VulnCheck