CVE-2026-93999

A flaw was found in the OIDC protocol implementation of Keycloak, an open-source identity and access management solution. The issue occurs during the token refresh process when the server restores requested audiences from stored client IDs. Keycloak fails to verify if the target audience client is still enabled before issuing a new access token. This allows an application with an existing refresh token to continue obtaining valid access tokens for a disabled client, potentially bypassing administrative access controls for resource servers that rely on offline JWT validation.

CVSS v3 4.2 MEDIUM

4.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-93999
https://bugzilla.redhat.com/show_bug.cgi?id=2537165

Configurations

No configuration.

History

19 Sep 2026, 15:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-19 15:17

Updated : 2026-09-22 19:37

NVD link : CVE-2026-93999

Mitre link : CVE-2026-93999

CVE.ORG link : CVE-2026-93999

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

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