{"id":"CVE-2023-6544","summary":"Keycloak: authorization bypass","details":"A flaw was found in the Keycloak package. This issue occurs due to a permissive regular expression hardcoded for filtering which allows hosts to register a dynamic client. A malicious user with enough information about the environment could jeopardize an environment with this specific Dynamic Client Registration and TrustedDomain configuration previously unauthorized.","aliases":["GHSA-46c8-635v-68r2"],"modified":"2026-07-16T03:46:31.109999496Z","published":"2024-04-25T15:58:47.204Z","related":["CGA-5999-v8f9-8x7h"],"database_specific":{"cna_assigner":"redhat","cwe_ids":["CWE-625"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/6xxx/CVE-2023-6544.json"},"references":[{"type":"WEB","url":"https://access.redhat.com/downloads/content/package-browser/"},{"type":"WEB","url":"https://catalog.redhat.com/software/containers/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:1860"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:1861"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:1862"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:1864"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:1866"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:1867"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2024:1868"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2023-6544"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/6xxx/CVE-2023-6544.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-6544"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2253116"},{"type":"PACKAGE","url":"https://github.com/keycloak/keycloak"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/keycloak/keycloak","events":[{"introduced":"b825ba97b489d715f7ca1984c19bd95afb355a38"},{"fixed":"bf8c3c32e53449a632381605f1162fafe9abe8eb"},{"introduced":"1d4ce3d8e9dbc9af996f9248996c78e145902a35"},{"fixed":"27d38787d9eae0854f79a358cda77f834008b71a"}],"database_specific":{"extracted_events":[{"introduced":"22.0.0"},{"fixed":"22.0.10"},{"introduced":"23.0.0"},{"fixed":"24.0.3"}],"source":"AFFECTED_FIELD"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-6544.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:L/I:L/A:N"}]}