{"id":"CVE-2023-2422","details":"A flaw was found in Keycloak. A Keycloak server configured to support mTLS authentication for OAuth/OpenID clients does not properly verify the client certificate chain. A client that possesses a proper certificate can authorize itself as any other client, therefore, access data that belongs to other clients.","aliases":["GHSA-3qh5-qqj2-c78f"],"modified":"2026-03-15T22:46:27.771945Z","published":"2023-10-04T11:15:10.157Z","references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:3883"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:3884"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:3885"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:3888"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2023:3892"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2023-2422"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2191668"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"4.9"}]},{"events":[{"introduced":"0"},{"last_affected":"4.10"}]},{"events":[{"introduced":"0"},{"last_affected":"4.11"}]},{"events":[{"introduced":"0"},{"last_affected":"4.12"}]},{"events":[{"introduced":"0"},{"last_affected":"7.6"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-2422.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N"}]}