{"id":"CVE-2026-65899","revision":"f062c95dee414ff3b7a94ae553c872b6","records":[{"revision":"f062c95dee414ff3b7a94ae553c872b6","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-65899","aliases":[],"title":"DOMPurify before 3.4.9 Trusted Types Policy State Contamination","description":"DOMPurify 3.0.0 before 3.4.9 does not reset the retained Trusted Types policy when clearConfig() is called, so a DOMPurify instance reused across trust boundaries stays bound to a previously supplied TRUSTED_TYPES_POLICY. A later caller that requests RETURN_TRUSTED_TYPE output receives a TrustedHTML object created by the old (potentially unsafe) policy rather than a clean default, which can lead to script execution at a Trusted Types sink. Passing TRUSTED_TYPES_POLICY: null on the later call also does not clear the retained policy.","state":0,"publishedAt":"2026-07-23T13:16:18.389+00:00","modifiedAt":"2026-10-08T15:23:59.489+00:00","affected":[{"ecosystem":"Vendor product","name":"DOMPurify","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"cure53\",\n                    \"product\": \"DOMPurify\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"3.4.9\"\n                        },\n                        {\n                            \"version\": \"3.4.9\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:npm/dompurify\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","score":5.1,"severity":"MEDIUM"},{"system":"CVSS 3.1","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/security/advisories/GHSA-vxr8-fq34-vvx9","https://github.com/cure53/DOMPurify/commit/825e617753ac1169306a542d3174a77f717a0cf6","https://www.vulncheck.com/advisories/dompurify-before-trusted-types-policy-state-contamination"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-65899","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-65899","identifiers":["CVE-2026-65899"]},"retained":false,"historicalAffected":[]}],"coverage":[]}