{"id":"CVE-2026-47423","state":"PUBLISHED","title":"DOMPurify XSS via `selectedcontent` re-clone","description":"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 <selectedcontent> is returned. This issue is fixed in version 3.4.5.","publishedAt":"2026-07-14T19:56:02.057Z","updatedAt":"2026-07-16T14:47:21.564Z","severity":{"score":8.2,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["cure53 DOMPurify"],"affected":[{"vendor":"cure53","product":"DOMPurify","versions":[{"version":">= 3.4.4, < 3.4.5","status":"affected"}]}],"references":["https://github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvx","https://github.com/cure53/DOMPurify/commit/011b0c78f2a0f57ee54f5fcccb697a46ca6e63ea","https://github.com/cure53/DOMPurify/releases/tag/3.4.5"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/47xxx/CVE-2026-47423.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-47423","state":"PUBLISHED","datePublished":"2026-07-14T19:56:02.057Z","dateUpdated":"2026-07-16T14:47:21.564Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-19T19:37:43.526Z"},"containers":{"cna":{"title":"DOMPurify XSS via `selectedcontent` re-clone","descriptions":[{"lang":"en","value":"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 <selectedcontent> is returned. This issue is fixed in version 3.4.5."}],"affected":[{"vendor":"cure53","product":"DOMPurify","versions":[{"version":">= 3.4.4, < 3.4.5","status":"affected"}]}],"references":[{"url":"https://github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvx","name":"https://github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvx","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/cure53/DOMPurify/commit/011b0c78f2a0f57ee54f5fcccb697a46ca6e63ea","name":"https://github.com/cure53/DOMPurify/commit/011b0c78f2a0f57ee54f5fcccb697a46ca6e63ea","tags":["x_refsource_MISC"]},{"url":"https://github.com/cure53/DOMPurify/releases/tag/3.4.5","name":"https://github.com/cure53/DOMPurify/releases/tag/3.4.5","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-14T19:56:02.057Z"},"source":{"advisory":"GHSA-87xg-pxx2-7hvx","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/cure53/DOMPurify/security/advisories/GHSA-87xg-pxx2-7hvx","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-16T14:46:50.385097Z","id":"CVE-2026-47423","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-16T14:47:21.564Z"}}]}}}