{"schema":"threatline.record/2","record":{"id":"CVE-2026-105209","aliases":["GHSA-pq2q-2c6r-75c4"],"summary":"ZITADEL before 3.4.15 and 4.17.1 Cross-Organization Account Takeover via Passkey Enrollment","details":"ZITADEL 3.x before 3.4.15 and 4.x before 4.17.1 contains an improper authorization vulnerability: when issuing passkey or passwordless enrollment codes, it checks only the organization in the x-zitadel-orgid header, not the target user's organization. Attackers with user-write permission in one organization can obtain an enrollment code for a user in another organization on the same instance and register their own authenticator to take over that account.","categories":["Unclassified"],"product":"zitadel","vendor":"zitadel","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-105209","source_modified_at":"2026-10-05T20:29:16.287Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"zitadel","vendor":"zitadel","versions":[{"version":"0","status":"affected","versionType":"semver","lessThan":"4.17.1"},{"version":"4.17.1","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-105209","source_modified_at":"2026-10-05T20:29:16.287Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"zitadel","vendor":"zitadel","versions":[{"version":"0","status":"affected","versionType":"semver","lessThan":"3.4.15"},{"version":"3.4.15","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-105209","source_modified_at":"2026-10-05T20:29:16.287Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"zitadel","ecosystem":null},"version":"4.17.1","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-105209","source_modified_at":"2026-10-05T20:29:16.287Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"zitadel","ecosystem":null},"version":"3.4.15","basis":"first unaffected version stated in the CVE record"}],"cvss":9.3,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.0022,"percentile":0.11931,"score_date":"2026-10-23"},"published_at":"2026-10-04T13:10:03.314Z","modified_at":"2026-10-05T20:29:16.287Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-105209","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-05T20:29:16.287Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-105209","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-pq2q-2c6r-75c4","tags":["vendor-advisory"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/zitadel-before-3.4.15-and-4.17.1-cross-organization-account-takeover-via-passkey-enrollment","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":"2026-10-05T19:18:35.422355Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-05T20:29:16.287Z","content_hash":"db87c73a76bdefec94da80a7562af8fa971828fb30d55ca39554a453f9b0a0a4"}}