{"id":"DEBIAN-CVE-2026-65898","details":"DOMPurify before 3.4.11 fails to clone the ALLOWED_ATTR allowlist when setConfig() is used with an uponSanitizeAttribute hook, allowing the hook to permanently mutate the shared allowlist. Attackers can register a hook that conditionally allows dangerous attributes like onerror for trusted elements, then submit untrusted content that inherits the polluted allowlist and executes event handlers as stored XSS.","modified":"2026-08-27T23:06:19.263611087Z","published":"2026-07-23T14:18:04.517Z","upstream":["CVE-2026-65898"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-65898"}],"affected":[{"package":{"name":"node-dompurify","ecosystem":"Debian:12","purl":"pkg:deb/debian/node-dompurify?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.4.1+dfsg+~2.4.0-1","2.4.1+dfsg+~2.4.0-2","2.4.1+dfsg+~2.4.0-2+deb12u1","3.0.9+dfsg+~3.0.5-1","3.1.6+dfsg+~3.0.5-1","3.1.7+dfsg+~3.0.5-1","3.1.7+dfsg+~3.0.5-2","3.2.5+dfsg-1","3.3.2+dfsg-1","3.3.3+dfsg-1","3.3.3+dfsg-2","3.4.1+dfsg-1","3.4.12+dfsg-1","3.4.13+dfsg-1","3.4.13+dfsg-2","3.4.2+dfsg-1","3.4.5+dfsg-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-65898.json"}},{"package":{"name":"node-dompurify","ecosystem":"Debian:13","purl":"pkg:deb/debian/node-dompurify?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.7+dfsg+~3.0.5-2","3.2.5+dfsg-1","3.3.2+dfsg-1","3.3.3+dfsg-1","3.3.3+dfsg-2","3.4.1+dfsg-1","3.4.12+dfsg-1","3.4.13+dfsg-1","3.4.13+dfsg-2","3.4.2+dfsg-1","3.4.5+dfsg-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-65898.json"}},{"package":{"name":"node-dompurify","ecosystem":"Debian:14","purl":"pkg:deb/debian/node-dompurify?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.12+dfsg-1"}]}],"versions":["3.1.7+dfsg+~3.0.5-2","3.2.5+dfsg-1","3.3.2+dfsg-1","3.3.3+dfsg-1","3.3.3+dfsg-2","3.4.1+dfsg-1","3.4.2+dfsg-1","3.4.5+dfsg-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-65898.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}