{"id":"CVE-2026-55669","state":"PUBLISHED","title":"ZITADEL: Missing Token Audience Validation (`aud`) in JWT IdP Provider","description":"ZITADEL is an open source identity management platform. Prior to 3.4.12 and 4.15.2, ZITADEL's external JWT Identity Provider validates a token's signature and issuer (iss) but not the audience (aud) claim, allowing a validly signed token from a trusted issuer for another relying party to be accepted by ZITADEL. This issue is fixed in versions 3.4.12 and 4.15.2.","publishedAt":"2026-07-10T16:58:46.140Z","updatedAt":"2026-07-10T18:16:52.558Z","severity":{"score":4.2,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["zitadel zitadel"],"affected":[{"vendor":"zitadel","product":"zitadel","versions":[{"version":">= 4.0.0-rc.1, < 4.15.2","status":"affected"},{"version":"< 3.4.12","status":"affected"}]}],"references":["https://github.com/zitadel/zitadel/security/advisories/GHSA-g5h5-m4hm-xjrr","https://github.com/zitadel/zitadel/releases/tag/v3.4.12","https://github.com/zitadel/zitadel/releases/tag/v4.15.2"],"weaknesses":["CWE-346"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/55xxx/CVE-2026-55669.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55669","state":"PUBLISHED","datePublished":"2026-07-10T16:58:46.140Z","dateUpdated":"2026-07-10T18:16:52.558Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-17T00:05:03.777Z"},"containers":{"cna":{"title":"ZITADEL: Missing Token Audience Validation (`aud`) in JWT IdP Provider","descriptions":[{"lang":"en","value":"ZITADEL is an open source identity management platform. Prior to 3.4.12 and 4.15.2, ZITADEL's external JWT Identity Provider validates a token's signature and issuer (iss) but not the audience (aud) claim, allowing a validly signed token from a trusted issuer for another relying party to be accepted by ZITADEL. This issue is fixed in versions 3.4.12 and 4.15.2."}],"affected":[{"vendor":"zitadel","product":"zitadel","versions":[{"version":">= 4.0.0-rc.1, < 4.15.2","status":"affected"},{"version":"< 3.4.12","status":"affected"}]}],"references":[{"url":"https://github.com/zitadel/zitadel/security/advisories/GHSA-g5h5-m4hm-xjrr","name":"https://github.com/zitadel/zitadel/security/advisories/GHSA-g5h5-m4hm-xjrr","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/zitadel/zitadel/releases/tag/v3.4.12","name":"https://github.com/zitadel/zitadel/releases/tag/v3.4.12","tags":["x_refsource_MISC"]},{"url":"https://github.com/zitadel/zitadel/releases/tag/v4.15.2","name":"https://github.com/zitadel/zitadel/releases/tag/v4.15.2","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.2,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-346","lang":"en","description":"CWE-346: Origin Validation Error","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-10T16:59:39.408Z"},"source":{"advisory":"GHSA-g5h5-m4hm-xjrr","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-10T18:16:38.817721Z","id":"CVE-2026-55669","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-10T18:16:52.558Z"}}]}}}