CVE-2026-4282
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 products
- Keycloak
- Redhat Build Of Keycloak
- All versions
- CVSS 3.1
- 7.4 HIGH
- EPSS
- 0.4% (35th percentile)
- Weakness
- CWE-653
- NVD status
- Modified
- Published
- 2026-04-02
Workaround
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
CVE-2026-4282 at NVD
1 known exploit for CVE-2026-4282
Proof-of-concept code and exploit modules indexed by Sploitus