{"id":"CVE-2026-47423","summary":"DOMPurify XSS via `selectedcontent` re-clone","details":"DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. In 3.4.4, DOMPurify allowed selectedcontent by default, allowing browsers to re-clone an XSS payload after sanitization so that unsanitized markup inside \u003cselectedcontent\u003e is returned. This issue is fixed in version 3.4.5.","aliases":["GHSA-87xg-pxx2-7hvx"],"modified":"2026-07-18T03:42:01.134407880Z","published":"2026-07-14T19:56:02.057Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47423.json"},"references":[{"type":"WEB","url":"https://github.com/cure53/DOMPurify/releases/tag/3.4.5"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47423.json"},{"type":"ADVISORY","url":"https://github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47423"},{"type":"FIX","url":"https://github.com/cure53/DOMPurify/commit/011b0c78f2a0f57ee54f5fcccb697a46ca6e63ea"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/cure53/dompurify","events":[{"introduced":"5817ad969c15e67dfcd6cb37248d6e9c1553e7c3"},{"fixed":"011b0c78f2a0f57ee54f5fcccb697a46ca6e63ea"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"3.4.4"},{"fixed":"3.4.5"}]}}],"versions":["3.4.4"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47423.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N"}]}