Business Logic Vulnerability in Keycloak's Token Exchange Component
CVE-2025-14559

6.5MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Build Of Keycloak
Vendor
CVE Published:
21 January 2026

What is CVE-2025-14559?

A significant flaw has been identified in the keycloak-services component of Keycloak. This vulnerability enables the issuance of access and refresh tokens for users who have been disabled, potentially allowing unauthorized access to resources and privileges that were previously revoked. The issue arises from a business logic error in the Token Exchange implementation, particularly when a privileged client executes the token exchange flow. This vulnerability poses a serious risk to user account integrity within applications utilizing Keycloak for authentication, making it essential for organizations to adopt mitigations to safeguard against unauthorized access.

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References

https://access.redhat.com/security/cve/CVE-2025-14559
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2421711
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Aytac Kalinci for reporting this issue.
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