{"id":"CVE-2026-2366","title":"A flaw was found in Keycloak","summary":"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 inf…","severity":"low","cvss":3.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-639"],"vendor":"redhat","product":"build_of_keycloak","affected":["build_of_keycloak >= 26.4, < 26.4.11"],"patched":["build_of_keycloak 26.4.11"],"published":"2026-03-12","updated":"2026-08-18","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-2366","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:6477","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:6478","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-2366","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2439081","label":"secalert@redhat.com"}],"tags":["nvd"],"epss":0.00268,"epssPercentile":0.19235,"ingestedAt":"2026-08-18T17:20:35.294Z","slug":"CVE-2026-2366","body":"## Overview\n\nA 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.\n\n## Affected\n\n- `build_of_keycloak >= 26.4, < 26.4.11`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `build_of_keycloak 26.4.11`","depth":"sunlit","depthScore":17,"depthScoreParts":{"impact":17.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}