{"id":"CVE-2026-3911","aliases":["GHSA-xh32-c9wx-phrp"],"url":"https://o3.security/vulnerability/CVE-2026-3911","summary":"Org.keycloak.services.resources.admin.userresource: keycloak: information disclosure of disabled user attributes via administrative endpoint","details":"A flaw was found in Keycloak. An authenticated user with the view-users role could exploit a vulnerability in the UserResource component. By accessing a specific administrative endpoint, this user could improperly retrieve user attributes that were configured to be hidden. This unauthorized information disclosure could expose sensitive user data.","published":"2026-08-25T11:42:23.921Z","modified":"2026-09-08T08:48:06.803806123Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Bitnami","name":"keycloak","fixedVersion":"26.4.1"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:6477"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:6478"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-3911"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2446392"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3911"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-08T08:48:06.803806123Z"}}