{"id":"CVE-2026-4282","aliases":["GHSA-hj93-h7pg-fh6v"],"url":"https://o3.security/vulnerability/CVE-2026-4282","summary":"Keycloak: keycloak: privilege escalation via forged authorization codes due to singleuseobjectprovider isolation flaw","details":"A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens, resulting in privilege escalation.","published":"2026-08-25T11:42:24.788Z","modified":"2026-09-08T08:48:07.336286328Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Bitnami","name":"keycloak","fixedVersion":"26.2.1"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:6475"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:6476"},{"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-2026-4282"},{"type":"ADVISORY","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2448061"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4282"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4282.json"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-08T08:48:07.336286328Z"}}