{"cve":"CVE-2026-55669","nvd":{"published":"2026-07-10T17:16:59.460","modified":"2026-07-10T19:17:25.870","status":"Deferred","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","score":4.2},"cwes":["CWE-346"],"references":["https://github.com/zitadel/zitadel/releases/tag/v3.4.12","https://github.com/zitadel/zitadel/releases/tag/v4.15.2","https://github.com/zitadel/zitadel/security/advisories/GHSA-g5h5-m4hm-xjrr"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:44:02.134301115+00:00"},"epss":{"cve":"CVE-2026-55669","score":0.00155,"percentile":0.04614,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-g5h5-m4hm-xjrr","url":"https://osv.dev/vulnerability/GHSA-g5h5-m4hm-xjrr","summary":" ZITADEL: Missing Token Audience Validation (`aud`) in JWT IdP Provider","modified":"2026-06-25T19:56:16.864834528Z","packages":[{"ecosystem":"Go","name":"github.com/zitadel/zitadel","purl":"pkg:golang/github.com/zitadel/zitadel","ranges":["<1.80.0-v2.20.0.20260615132747-d184e976fc79"],"fixed":["1.80.0-v2.20.0.20260615132747-d184e976fc79"]}]},{"id":"GO-2026-5391","url":"https://osv.dev/vulnerability/GO-2026-5391","summary":"ZITADEL: Missing Token Audience Validation (`aud`) in JWT IdP Provider in github.com/zitadel/zitadel","modified":"2026-06-25T19:45:38.463651564Z","packages":[{"ecosystem":"Go","name":"github.com/zitadel/zitadel","purl":"pkg:golang/github.com/zitadel/zitadel","ranges":["<1.80.0-v2.20.0.20260615132747-d184e976fc79"],"fixed":["1.80.0-v2.20.0.20260615132747-d184e976fc79"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}