{"schema":"threatline.record/2","record":{"id":"CVE-2026-109374","aliases":["GHSA-w4gv-rcwj-w6r5"],"summary":"ZITADEL 3.0.0 before 4.19.2 Privilege Escalation via OIDC Token Exchange Impersonation","details":"ZITADEL 3.0.0 before 4.19.2 contains a privilege escalation vulnerability in OIDC token exchange that allows end-user impersonators to impersonate administrators including IAM_OWNER by bypassing the admin.impersonation check. Attackers holding IAM_END_USER_IMPERSONATOR or ORG_END_USER_IMPERSONATOR roles can sign in to relying applications as administrators with their roles and claims.","categories":["Unclassified"],"product":"zitadel","vendor":"zitadel","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109374","source_modified_at":"2026-10-13T17:27:50.947Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"zitadel","vendor":"zitadel","versions":[{"version":"3.0.0","status":"affected","versionType":"semver","lessThan":"4.19.2"},{"version":"4.19.2","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109374","source_modified_at":"2026-10-13T17:27:50.947Z","fetched_at":"2026-10-23T18:48:36.087640Z","package":{"name":"zitadel","ecosystem":null},"version":"4.19.2","basis":"first unaffected version stated in the CVE record"}],"cvss":5.1,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00209,"percentile":0.10568,"score_date":"2026-10-23"},"published_at":"2026-10-12T16:05:46.811Z","modified_at":"2026-10-13T17:27:50.947Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-109374","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-13T17:27:50.947Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-109374","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/zitadel/zitadel/security/advisories/GHSA-w4gv-rcwj-w6r5","tags":["vendor-advisory"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/zitadel-3.0.0-before-4.19.2-privilege-escalation-via-oidc-token-exchange-impersonation","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-13T17:27:39.596228Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-13T17:27:50.947Z","content_hash":"e2f64faad3a9f4346943802543cb48105f57fe4f1185cf1180222dd04cc5f840"}}