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CVE-2026-4282

Keycloak: keycloak: privilege escalation via forged authorization codes due to singleuseobjectprovider isolation flaw PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
Red Hat / Red Hat build of Keycloak 26.2unaffected 26.2.15-1 before *
Red Hat / Red Hat build of Keycloak 26.2unaffected 26.2-18 before *
Red Hat / Red Hat build of Keycloak 26.2unaffected 26.2-18 before *
Red Hat / Red Hat build of Keycloak 26.2.15unaffected
Red Hat / Red Hat build of Keycloak 26.4unaffected 26.4.11-1 before *
Red Hat / Red Hat build of Keycloak 26.4unaffected 26.4-14 before *
Red Hat / Red Hat build of Keycloak 26.4unaffected 26.4-14 before *
Red Hat / Red Hat build of Keycloak 26.4.11unaffected

CWE

CWE-653

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

redhat-SADP

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.