{"id":"CVE-2026-49458","revision":"f37fab3417f049e4869d9135c84a42db","records":[{"revision":"f37fab3417f049e4869d9135c84a42db","observedAt":"2026-10-25T12:17:38.331+00:00","statement":{"source":"nvd","id":"CVE-2026-49458","aliases":[],"title":"DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Prior to 3.4.6, DOMPurify.sanitize(node, { IN_PLACE: true }) accepted same-origin foreign-realm DOM nodes while follow-on checks used parent-realm constructor…","description":"DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Prior to 3.4.6, DOMPurify.sanitize(node, { IN_PLACE: true }) accepted same-origin foreign-realm DOM nodes while follow-on checks used parent-realm constructors, causing instanceof checks for forms, named node maps, document fragments, and elements to fail and skip clobber, template-content, and shadow-DOM sanitization branches so executable markup could survive. This issue is fixed in version 3.4.6.","state":0,"publishedAt":"2026-07-14T21:17:01.62+00:00","modifiedAt":"2026-10-24T21:10:00.13+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","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/commit/bb7739e5bccec7e1ab3dae3f3e42d02db3acaaae","https://github.com/cure53/DOMPurify/releases/tag/3.4.6","https://github.com/cure53/DOMPurify/security/advisories/GHSA-hpcv-96wg-7vj8"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-49458","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-79","CWE-501","CWE-693"],"productCriteria":["cpe:2.3:a:cure53:dompurify:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-07-14T21:17:01.620","lastModified":"2026-10-24T21:10:00.130"},"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-2026-49458","identifiers":["CVE-2026-49458"]},"retained":false,"historicalAffected":[]}],"coverage":[]}