CVE-2026-4282 Keycloak: keycloak: privilege escalation via forged authorization codes due to singleuseobjectprovider isolation flaw

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,...

CVE-2026-4282 Keycloak: keycloak: privilege escalation via forged authorization codes due to singleuseobjectprovider isolation flaw

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,...

Keycloak security vulnerabilities

Keycloak is an open-source identity and access management solution developed by Keycloak. Keycloak has a security vulnerability, which stems from the lack of proper type and namespace isolation in SingleUseObjectProvider. This vulnerability could allow unverified attackers to forge authorization...