CVE-2026-37979
Keycloak: keycloak: information disclosure via oidc token introspection endpoint audience bypass
Description
A flaw was found in Keycloak. This access control vulnerability in Keycloak's OpenID Connect (OIDC) token introspection endpoint allows a confidential client to bypass audience restrictions. An attacker-controlled client with valid credentials can retrieve sensitive token claims intended for other resource servers, compromising the confidentiality of lightweight access tokens. This issue can be exploited remotely by any confidential client in the realm with valid credentials.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:LPrivileges RequiredLow
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:NIntegrityNone
A:NAvailabilityNone
Weaknesses
Affected Products
Red Hat
commercial·USaka redhat
Exploitability
Official Patch Available
Workaround Available
References
https://access.redhat.com/errata/RHSA-2026:19596
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:19597
access.redhat.com
https://access.redhat.com/security/cve/CVE-2026-37979
access.redhat.com
and 1 more references View all →
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