{"schema":"threatline.record/2","record":{"id":"CVE-2026-116803","aliases":["GHSA-mrv2-3pqr-j5jr"],"summary":"DOMPurify before 3.4.17 DOM XSS via IN_PLACE Hook-Detached Subtrees","details":"DOMPurify before 3.4.17 contains a cross-site scripting vulnerability that allows attackers to keep event handlers armed when an IN_PLACE hook removes a parent or sibling node. Attacker markup in detached subtrees is never walked or neutralized, so handlers like img onerror fire after sanitize() returns, causing DOM XSS.","categories":["Libraries & packages"],"product":"DOMPurify","vendor":"cure53","ecosystem":"npm","affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-116803","source_modified_at":"2026-10-26T23:05:35.135Z","fetched_at":"2026-10-26T23:45:56.352924Z","product":"DOMPurify","vendor":"cure53","versions":[{"version":"0","status":"affected","versionType":"semver","lessThan":"3.4.17"},{"version":"3.4.17","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-mrv2-3pqr-j5jr","source_modified_at":"2026-10-22T16:30:08.602402388Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"dompurify","purl":"pkg:npm/dompurify"},"ranges":[{"events":[{"introduced":"0"},{"fixed":"3.4.17"}],"type":"SEMVER"}],"versions":[]}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-116803","source_modified_at":"2026-10-26T23:05:35.135Z","fetched_at":"2026-10-26T23:45:56.352924Z","package":{"name":"DOMPurify","ecosystem":null},"version":"3.4.17","basis":"first unaffected version stated in the CVE record"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-mrv2-3pqr-j5jr","source_modified_at":"2026-10-22T16:30:08.602402388Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"dompurify","purl":"pkg:npm/dompurify"},"version":"3.4.17"}],"cvss":5.1,"severity":"Medium","kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-26T23:05:35.135Z","modified_at":"2026-10-26T23:05:35.135Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-116803","fetched_at":"2026-10-26T23:45:56.352924Z","source_modified_at":"2026-10-26T23:05:35.135Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-mrv2-3pqr-j5jr","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-22T16:30:08.602402388Z"}],"sources":["CVE List","OSV"],"references":[{"source":"CVE List","url":"https://github.com/cure53/DOMPurify/security/advisories/GHSA-mrv2-3pqr-j5jr","tags":["vendor-advisory"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/dompurify-before-3.4.17-dom-xss-via-in-place-hook-detached-subtrees","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"ecosystem","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-26T23:05:35.135Z","content_hash":"6f73a7379962d24b491e1904c6154698ae27ed3a95ca29a79194fff904c28a53"}}