{"id":"CVE-2026-37978","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-37978","summary":"Keycloak: Information Disclosure via evaluate-scopes Admin API","details":"A flaw was found in Keycloak. A low-privilege administrator with the 'view-clients' role can exploit this by invoking the 'evaluate-scopes' Admin API endpoints with an arbitrary user ID (userId) parameter. This vulnerability allows for cross-role personally identifiable information (PII) leakage, enabling unauthorized visibility into user identities and authorizations across the realm. Exploitation is possible remotely via network access to the Admin API.","published":"2026-05-19T12:31:39Z","modified":"2026-06-04T15:45:17.769914357Z","cvss":{"score":4.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N"},"epss":{"score":0.00398,"percentile":0.33017,"asOf":"2026-08-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.keycloak:keycloak-services","fixedVersion":"26.6.2"}],"fix":{"url":"https://github.com/keycloak/keycloak/commit/492d1f04cdad425dadb9d5e1faa94dd17a875573","label":"keycloak/keycloak@492d1f0"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-37978"},{"type":"WEB","url":"https://github.com/keycloak/keycloak/commit/492d1f04cdad425dadb9d5e1faa94dd17a875573"},{"type":"WEB","url":"https://github.com/keycloak/keycloak/commit/ba9a18744dcec2ef46f284d25c1c0aa1c962a500"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:19596"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:19597"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-37978"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2455327"},{"type":"PACKAGE","url":"https://github.com/keycloak/keycloak"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-06-04T15:45:17.769914357Z"}}