{"id":"CVE-2026-65912","aliases":["GHSA-cjmm-f4jc-qw8r"],"url":"https://o3.security/vulnerability/CVE-2026-65912","summary":"DOMPurify before 3.3.2 URI Validation Bypass via ADD_ATTR","details":"DOMPurify before 3.3.2 contains a URI validation bypass vulnerability when ADD_ATTR is provided as a predicate function via EXTRA_ELEMENT_HANDLING.attributeCheck. Attackers can supply a predicate that accepts specific attribute and tag combinations to bypass URI-safe validation, allowing unsafe protocols like javascript: to survive sanitization and execute as DOM-based XSS when the link is activated.","published":"2026-07-23T13:16:23.406Z","modified":"2026-08-12T03:51:14.029498654Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"dompurify","fixedVersion":"3.3.2"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/65xxx/CVE-2026-65912.json"},{"type":"ADVISORY","url":"https://github.com/cure53/DOMPurify/security/advisories/GHSA-cjmm-f4jc-qw8r"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65912"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/dompurify-before-uri-validation-bypass-via-add-attr"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:14.029498654Z"}}