CVE-2026-0540 MEDIUM

CVE-2026-0540: DOMPurify XSS via Missing Rawtext Elements in SAFE_FOR_XML

Vendor Cure53
Product DOMPurify
Weakness CWE-79 · XSS
Published March 3, 2026
Last update March 25, 2026

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 3, 2026 CVE published
March 25, 2026 Record updated

Related vulnerabilities

04Related CVE