{"cve":"CVE-2026-2366","nvd":{"published":"2026-03-12T11:15:55.860","modified":"2026-08-18T16:38:20.170","status":"Analyzed","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.","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:N/A:N","score":3.1},"cwes":["CWE-639"],"references":["https://access.redhat.com/errata/RHSA-2026:6477","https://access.redhat.com/errata/RHSA-2026:6478","https://access.redhat.com/security/cve/CVE-2026-2366","https://bugzilla.redhat.com/show_bug.cgi?id=2439081"],"products":["redhat:build_of_keycloak"],"source":"nvd","synced_at":"2026-10-19T22:25:53.701907451+00:00"},"epss":{"cve":"CVE-2026-2366","score":0.00279,"percentile":0.20415,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-r8jr-wg88-fq5c","url":"https://osv.dev/vulnerability/GHSA-r8jr-wg88-fq5c","summary":"Keycloak vulnerable to authorization bypass via the Admin API","modified":"2026-08-26T01:11:27.329940150Z","packages":[{"ecosystem":"npm","name":"@keycloak/keycloak-admin-client","purl":"pkg:npm/%40keycloak/keycloak-admin-client","ranges":["<=26.5.5"],"fixed":[]},{"ecosystem":"Maven","name":"org.keycloak:keycloak-js-admin-client","purl":"pkg:maven/org.keycloak/keycloak-js-admin-client","ranges":["<=26.5.5"],"fixed":[]}]}],"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."]}