7.4
High
CVE-2026-4282 A flaw was found in Keycloak
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 products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Build of Keycloak | Versions not published | |
| Red Hat build of Keycloak 26.4 26.4 | earliest → < 26.4-14 | 26.4-14 |
| Red Hat build of Keycloak 26.4.11 | Versions not published | |
| Red Hat build of Keycloak 26.2 26.2 | earliest → < 26.2-18 | 26.2-18 |
| Red Hat build of Keycloak 26.2.15 | Versions not published |
References
- RHSA-2026:6475 access.redhat.com
- RHSA-2026:6476 access.redhat.com
- RHSA-2026:6477 access.redhat.com
- RHSA-2026:6478 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2448061 bugzilla.redhat.com
Timeline
- Published
- Last modified
Other CVEs of Red Hat Build of Keycloak
The 276 CVEs of Red Hat Build of Keycloak →
CVE-2026-9797
Keycloak: keycloak: privilege escalation via client authentication manipulation by an authenticated administrator
6.5
Medium
CVE-2026-97848
Keycloak-services: keycloak-services: protocol mapper with jsontype=json bypasses token sanitization
6.5
Medium
CVE-2026-97367
Keycloak-services: keycloak-services: dcr azp and sid claim substitution allows account rest session takeover
6.4
Medium
CVE-2026-96547
Keycloak-services: keycloak-services: dcr registration-time claim-path gap allows forging realm_access.roles
6.5
Medium