{"id":"CVE-2026-4282","aliases":["BIT-keycloak-2026-4282","EUVD-2026-18208","GHSA-hj93-h7pg-fh6v"],"status":"published","title":"Keycloak: keycloak: privilege escalation via forged authorization codes due to singleuseobjectprovider isolation flaw","description":"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. 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Advisory","advisory","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2448061","tags":["issue-tracking","x_refsource_REDHAT","Issue Tracking","Vendor Advisory","advisory","web"]},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4282.json","tags":["x_sadp-csaf-vex","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4282","tags":["web","advisory"]},{"url":"https://github.com/keycloak/keycloak/issues/47719","tags":["web"]},{"url":"https://github.com/keycloak/keycloak/commit/9046f201125a6fd6be9c116b99d348509d99d4a5","tags":["web"]},{"url":"https://github.com/advisories/GHSA-hj93-h7pg-fh6v"},{"url":"https://github.com/keycloak/keycloak","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-4282","title":"Keycloak: keycloak: privilege escalation via forged authorization codes due to singleuseobjectprovider isolation flaw","description":"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.","status":"published","published":"2026-04-02T12:44:52.941Z","modified":"2026-07-15T00:56:46.658Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"cna"},{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"adp"}],"cwes":["CWE-653","CWE-653"],"updated_at":"2026-11-02T14:19:59.369956Z"}],"euvd":[{"id":"EUVD-2026-18208","description":"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. 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Successful exploitation can lead to the creation of admin-capable access tokens, resulting in privilege escalation.","status":"published","published":"2026-08-25T11:42:24.788Z","modified":"2026-09-08T08:48:07.336286328Z","updated_at":"2026-11-02T15:28:32.162822Z"}]}}