{"id":"CVE-2026-116804","revision":"5d8af24b21f04045961d8cd845f10d4f","records":[{"revision":"5d8af24b21f04045961d8cd845f10d4f","observedAt":"2026-10-27T02:23:01.617+00:00","statement":{"source":"cve-program","id":"CVE-2026-116804","aliases":[],"title":"DOMPurify from 3.4.4 before 3.4.17 SAFE_FOR_TEMPLATES Bypass via Shadow Root Content","description":"DOMPurify from 3.4.4 before 3.4.17 contains a SAFE_FOR_TEMPLATES bypass that lets attackers preserve template expressions in attached shadow roots when using RETURN_DOM, RETURN_DOM_FRAGMENT, or IN_PLACE modes. Attackers can split expressions across text nodes separated by disallowed elements, which merge after removal and are evaluated by downstream template engines for cross-site scripting.","state":0,"publishedAt":"2026-10-26T23:05:35.85+00:00","modifiedAt":"2026-10-26T23:05:35.85+00:00","affected":[{"ecosystem":"Vendor product","name":"DOMPurify","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"cure53\",\n                    \"product\": \"DOMPurify\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:npm/dompurify\",\n                    \"versions\": [\n                        {\n                            \"version\": \"3.4.4\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"3.4.17\"\n                        },\n                        {\n                            \"version\": \"3.4.17\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\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-cg2g-xh64-v4q7","https://www.vulncheck.com/advisories/dompurify-from-3.4.4-before-3.4.17-safe-for-templates-bypass-via-shadow-root-content"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-116804","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-116804","identifiers":["CVE-2026-116804"]},"retained":false,"historicalAffected":[]}],"coverage":[]}