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Vulnerability Details 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.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.0

EPSS Ranking 8.8%

CVSS Severity

CVSS v3 Score 7.4

References

https://access.redhat.com/errata/RHSA-2026:6475
https://access.redhat.com/errata/RHSA-2026:6476
https://access.redhat.com/errata/RHSA-2026:6477
https://access.redhat.com/errata/RHSA-2026:6478
https://access.redhat.com/security/cve/CVE-2026-4282
https://bugzilla.redhat.com/show_bug.cgi?id=2448061

Products affected by CVE-2026-4282

Redhat » Build Of Keycloak » Version: N/A

cpe:2.3:a:redhat:build_of_keycloak:-
Redhat » Build Of Keycloak » Version: 26.2

cpe:2.3:a:redhat:build_of_keycloak:26.2
Redhat » Build Of Keycloak » Version: 26.2.15

cpe:2.3:a:redhat:build_of_keycloak:26.2.15
Redhat » Build Of Keycloak » Version: 26.4

cpe:2.3:a:redhat:build_of_keycloak:26.4
Redhat » Build Of Keycloak » Version: 26.4.11

cpe:2.3:a:redhat:build_of_keycloak:26.4.11

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Vulnerability Details CVE-2026-4282

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