{"id":"BIT-keycloak-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.","aliases":["CVE-2026-4282","GHSA-hj93-h7pg-fh6v"],"modified":"2026-09-08T08:48:07.336286328Z","published":"2026-08-25T11:42:24.788Z","database_specific":{"cpes":["cpe:2.3:a:redhat:build_of_keycloak:*:*:*:*:text-only:*:*:*","cpe:2.3:a:keycloak:keycloak:*:*:*:*:*:*:*:*"],"severity":"High"},"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"}],"affected":[{"package":{"name":"keycloak","ecosystem":"Bitnami","purl":"pkg:bitnami/keycloak"},"ranges":[{"type":"SEMVER","events":[{"introduced":"26.2.0"},{"fixed":"26.2.1"},{"introduced":"26.2.15"},{"fixed":"26.3.0"},{"introduced":"26.4.0"},{"fixed":"26.4.1"},{"introduced":"26.4.11"},{"fixed":"26.5.0"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/keycloak/BIT-keycloak-2026-4282.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"}]}],"schema_version":"1.9.0"}