CVE-2026-116802
CVE-2026-116802 · DOMPurify before 3.4.17 XSS via SMIL attributeName Guard Bypass in XHTML Mode
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DOMPurify before 3.4.17 contains a cross-site scripting vulnerability that allows attackers to bypass the SMIL attributeName=href guard when PARSER_MEDIA_TYPE is application/xhtml+xml, because transformCaseFunc does not lowercase attribute names. Attackers can submit SVG with an animate or set element using attributeName="href" and a javascript: entry in values to execute script when users click the sanitized link.
CVSS 5.1 · Media · EPSS 0,2% · Corrección disponible
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- Actualización
Pila tecnológica: node