CVE-2026-4282

HIGH7.4EPSS 0.02%

Keycloak: Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw

Published: 4/2/2026Modified: 4/4/2026

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.

Affected packages (1)

CVSS scores

SourceVersionSeverityVector
osvCVSS 3.1HIGH7.4CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References (10)