Vulnerability Details CVE-2026-0540
DOMPurify 3.1.3 through 3.3.1 and 2.5.3 through 2.5.8, fixed in commit 729097f, 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 7.8%
CVSS Severity
CVSS v3 Score 6.1
References
Products affected by CVE-2026-0540
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cpe:2.3:a:cure53:dompurify:2.5.3
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cpe:2.3:a:cure53:dompurify:2.5.4
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cpe:2.3:a:cure53:dompurify:2.5.5
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cpe:2.3:a:cure53:dompurify:2.5.6
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cpe:2.3:a:cure53:dompurify:2.5.7
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cpe:2.3:a:cure53:dompurify:2.5.8
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cpe:2.3:a:cure53:dompurify:3.1.3
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cpe:2.3:a:cure53:dompurify:3.1.4
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cpe:2.3:a:cure53:dompurify:3.1.5
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cpe:2.3:a:cure53:dompurify:3.1.6
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cpe:2.3:a:cure53:dompurify:3.1.7
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cpe:2.3:a:cure53:dompurify:3.2.0
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cpe:2.3:a:cure53:dompurify:3.2.1
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cpe:2.3:a:cure53:dompurify:3.2.2
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cpe:2.3:a:cure53:dompurify:3.2.3
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cpe:2.3:a:cure53:dompurify:3.2.4
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cpe:2.3:a:cure53:dompurify:3.2.5
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cpe:2.3:a:cure53:dompurify:3.2.6
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cpe:2.3:a:cure53:dompurify:3.2.7
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cpe:2.3:a:cure53:dompurify:3.3.0