CVE-2026-4282
HIGH
NVD
CVSS Score
7.4
Severity
HIGH
Published
Apr 02, 2026
Vendor
unknown
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.