{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-49458","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-05-30T02:43:33.107Z","datePublished":"2026-07-14T19:58:50.397Z","dateUpdated":"2026-07-15T13:03:02.384Z"},"containers":{"cna":{"title":"DOMPurify: Cross-realm IN_PLACE sanitization leaves executable markup intact via realm-bound `instanceof` checks","problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-501","lang":"en","description":"CWE-501: Trust Boundary Violation","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-693","lang":"en","description":"CWE-693: Protection Mechanism Failure","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.1,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/cure53/DOMPurify/security/advisories/GHSA-hpcv-96wg-7vj8","tags":["x_refsource_CONFIRM"],"url":"https://github.com/cure53/DOMPurify/security/advisories/GHSA-hpcv-96wg-7vj8"},{"name":"https://github.com/cure53/DOMPurify/commit/bb7739e5bccec7e1ab3dae3f3e42d02db3acaaae","tags":["x_refsource_MISC"],"url":"https://github.com/cure53/DOMPurify/commit/bb7739e5bccec7e1ab3dae3f3e42d02db3acaaae"},{"name":"https://github.com/cure53/DOMPurify/releases/tag/3.4.6","tags":["x_refsource_MISC"],"url":"https://github.com/cure53/DOMPurify/releases/tag/3.4.6"}],"affected":[{"vendor":"cure53","product":"DOMPurify","versions":[{"version":"< 3.4.6","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-14T19:58:50.397Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-hpcv-96wg-7vj8","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/cure53/DOMPurify/security/advisories/GHSA-hpcv-96wg-7vj8","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-15T13:02:56.040047Z","id":"CVE-2026-49458","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-15T13:03:02.384Z"}}]}}