{"id":"CVE-2026-2366","aliases":["BIT-keycloak-2026-2366","EUVD-2026-11553","GHSA-r8jr-wg88-fq5c"],"status":"published","title":"Keycloak: keycloak: information disclosure via authorization bypass in admin api","description":"A flaw was found in Keycloak. An authorization bypass vulnerability in the Keycloak Admin API allows any authenticated user, even those without administrative privileges, to enumerate the organization memberships of other users. This information disclosure occurs if the attacker knows the victim's unique identifier (UUID) and the Organizations feature is enabled.","severity":{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00296,"percentile":0.22513,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-639"],"published":"2026-03-12T10:54:31Z","modified":"2026-09-08T08:48:06Z","fixes":[{"ecosystem":"Bitnami","package":"keycloak","fixed_in":["26.4.11"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"@keycloak/keycloak-admin-client","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"26.5.5"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.keycloak:keycloak-js-admin-client","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"26.5.5"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"keycloak","ranges":[{"type":"SEMVER","events":[{"introduced":"26.4.0"},{"fixed":"26.4.11"}]}]},{"source":"osv","ecosystem":"npm","package":"@keycloak/keycloak-admin-client","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"26.5.5"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.keycloak:keycloak-js-admin-client","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"26.5.5"}]}],"versions":["26.3.0","26.3.1","26.3.2","26.3.3","26.3.4","26.3.5","26.4.0","26.4.1","26.4.2","26.4.3","26.4.4","26.4.5","26.4.6","26.4.7","26.5.0","26.5.1","26.5.2","26.5.3","26.5.4","26.5.5"]}],"products":[{"vendor":"red hat","product":"red hat build of keycloak 26.4"},{"vendor":"red hat","product":"red hat build of keycloak 26.4.11"},{"vendor":"redhat","product":"build_of_keycloak"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:6477","tags":["vendor-advisory","x_refsource_REDHAT","Vendor Advisory","advisory","web"]},{"url":"https://access.redhat.com/errata/RHSA-2026:6478","tags":["vendor-advisory","x_refsource_REDHAT","Vendor Advisory","advisory","web"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-2366","tags":["vdb-entry","x_refsource_REDHAT","Vendor Advisory","advisory","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2439081","tags":["issue-tracking","x_refsource_REDHAT","Exploit","Issue Tracking","Vendor Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-2366","tags":["web","advisory"]},{"url":"https://github.com/keycloak/keycloak/issues/47062","tags":["web"]},{"url":"https://github.com/advisories/GHSA-r8jr-wg88-fq5c"},{"url":"https://github.com/keycloak/keycloak","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-2366","title":"Keycloak: keycloak: information disclosure via authorization bypass in admin api","description":"A flaw was found in Keycloak. An authorization bypass vulnerability in the Keycloak Admin API allows any authenticated user, even those without administrative privileges, to enumerate the organization memberships of other users. This information disclosure occurs if the attacker knows the victim's unique identifier (UUID) and the Organizations feature is enabled.","status":"published","published":"2026-03-12T10:54:31.99Z","modified":"2026-04-02T16:47:20.399Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T13:48:35.749498Z"}],"euvd":[{"id":"EUVD-2026-11553","description":"A flaw was found in Keycloak. An authorization bypass vulnerability in the Keycloak Admin API allows any authenticated user, even those without administrative privileges, to enumerate the organization memberships of other users. This information disclosure occurs if the attacker knows the victim's unique identifier (UUID) and the Organizations feature is enabled.","status":"published","published":"2026-03-12T10:54:31Z","modified":"2026-04-02T16:47:20Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"updated_at":"2026-11-02T19:25:22.606516Z"}],"ghsa":[{"id":"GHSA-r8jr-wg88-fq5c","title":"Keycloak vulnerable to authorization bypass via the Admin API","description":"A flaw was found in Keycloak. An authorization bypass vulnerability in the Keycloak Admin API allows any authenticated user, even those without administrative privileges, to enumerate the organization memberships of other users. This information disclosure occurs if the attacker knows the victim's unique identifier (UUID) and the Organizations feature is enabled.","status":"published","published":"2026-03-12T12:30:29Z","modified":"2026-04-02T15:31:36Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:39:47.945242Z"}],"nvd":[{"id":"CVE-2026-2366","description":"A flaw was found in Keycloak. An authorization bypass vulnerability in the Keycloak Admin API allows any authenticated user, even those without administrative privileges, to enumerate the organization memberships of other users. This information disclosure occurs if the attacker knows the victim's unique identifier (UUID) and the Organizations feature is enabled.","status":"published","published":"2026-03-12T11:15:55.86Z","modified":"2026-08-18T16:38:20.17Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"secondary"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:12:09.358914Z"}],"osv":[{"id":"GHSA-r8jr-wg88-fq5c","title":"Keycloak vulnerable to authorization bypass via the Admin API","description":"A flaw was found in Keycloak. An authorization bypass vulnerability in the Keycloak Admin API allows any authenticated user, even those without administrative privileges, to enumerate the organization memberships of other users. This information disclosure occurs if the attacker knows the victim's unique identifier (UUID) and the Organizations feature is enabled.","status":"published","published":"2026-03-12T12:30:29Z","modified":"2026-08-26T01:11:27.32994015Z","cvss":[{"version":"3.1","score":3.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T15:46:55.480549Z"},{"id":"BIT-keycloak-2026-2366","title":"Keycloak: keycloak: information disclosure via authorization bypass in admin api","description":"A flaw was found in Keycloak. An authorization bypass vulnerability in the Keycloak Admin API allows any authenticated user, even those without administrative privileges, to enumerate the organization memberships of other users. This information disclosure occurs if the attacker knows the victim's unique identifier (UUID) and the Organizations feature is enabled.","status":"published","published":"2026-08-25T11:42:11.089Z","modified":"2026-09-08T08:48:06.60038936Z","updated_at":"2026-11-02T15:28:32.162822Z"}]}}