{"id":"CVE-2026-116802","revision":"2c6a17dbffac4884ad63c027dfbc00a4","records":[{"revision":"2c6a17dbffac4884ad63c027dfbc00a4","observedAt":"2026-10-29T11:13:09.369+00:00","statement":{"source":"nvd","id":"CVE-2026-116802","aliases":[],"title":"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 …","description":"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.","state":0,"publishedAt":"2026-10-27T00:17:11.637+00:00","modifiedAt":"2026-10-27T15:06:33.62+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · disclosure@vulncheck.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":5.1,"severity":"MEDIUM"},{"system":"CVSS 3.1 · disclosure@vulncheck.com · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1,"severity":"MEDIUM"}],"references":["https://github.com/cure53/DOMPurify/security/advisories/GHSA-c6gr-qvv4-5v3f","https://www.vulncheck.com/advisories/dompurify-before-3.4.17-xss-via-smil-attributename-guard-bypass-in-xhtml-mode"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-116802","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-79"],"productCriteria":[],"sourceDates":{"published":"2026-10-27T00:17:11.637","lastModified":"2026-10-27T15:06:33.620"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-116802","identifiers":["CVE-2026-116802"]},"retained":false,"historicalAffected":[]}],"coverage":[]}