CVE-2025-14777: Authentication Bypass by Alternate Name in Red Hat Red Hat build of Keycloak 26.4
A flaw was found in Keycloak. An IDOR (Broken Access Control) vulnerability exists in the admin API endpoints for authorization resource management, specifically in ResourceSetService and PermissionTicketService. The system checks authorization against the resourceServer (client) ID provided in the API request, but the backend database lookup and modification operations (findById, delete) only use the resourceId. This mismatch allows an authenticated attacker with fine-grained admin permissions for one client (e.g., Client A) to delete or update resources belonging to another client (Client B) within the same realm by supplying a valid resource ID.
AI Analysis
Technical Summary
This vulnerability is an IDOR (Insecure Direct Object Reference) in the Keycloak admin API endpoints for authorization resource management, specifically in ResourceSetService and PermissionTicketService. The system verifies authorization against the resourceServer (client) ID provided in the API request, but the backend operations (findById, delete) only use the resourceId, allowing an attacker with admin permissions on one client to manipulate resources of another client within the same realm by supplying a valid resource ID. This flaw affects the Red Hat build of Keycloak 26.4 and was assigned CVE-2025-14777 with a CVSS 3.1 score of 6.0 (medium severity).
Potential Impact
An authenticated attacker with fine-grained admin permissions for one client can delete or update resources belonging to another client within the same realm. This can lead to unauthorized modification or deletion of resources, potentially disrupting service or causing data integrity issues. The confidentiality impact is low, integrity impact is high, and availability impact is low as per the CVSS vector.
Mitigation Recommendations
Red Hat has released an updated version, Red Hat build of Keycloak 26.4.11, which addresses this vulnerability. Users should back up their existing installations and apply the update as soon as possible. The vendor advisory provides official fixes and updated container images for OpenShift deployments. No other mitigation or workaround is indicated in the advisory.
CVE-2025-14777: Authentication Bypass by Alternate Name in Red Hat Red Hat build of Keycloak 26.4
Description
A flaw was found in Keycloak. An IDOR (Broken Access Control) vulnerability exists in the admin API endpoints for authorization resource management, specifically in ResourceSetService and PermissionTicketService. The system checks authorization against the resourceServer (client) ID provided in the API request, but the backend database lookup and modification operations (findById, delete) only use the resourceId. This mismatch allows an authenticated attacker with fine-grained admin permissions for one client (e.g., Client A) to delete or update resources belonging to another client (Client B) within the same realm by supplying a valid resource ID.
CVSS v3.1
Score 6.0medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is an IDOR (Insecure Direct Object Reference) in the Keycloak admin API endpoints for authorization resource management, specifically in ResourceSetService and PermissionTicketService. The system verifies authorization against the resourceServer (client) ID provided in the API request, but the backend operations (findById, delete) only use the resourceId, allowing an attacker with admin permissions on one client to manipulate resources of another client within the same realm by supplying a valid resource ID. This flaw affects the Red Hat build of Keycloak 26.4 and was assigned CVE-2025-14777 with a CVSS 3.1 score of 6.0 (medium severity).
Potential Impact
An authenticated attacker with fine-grained admin permissions for one client can delete or update resources belonging to another client within the same realm. This can lead to unauthorized modification or deletion of resources, potentially disrupting service or causing data integrity issues. The confidentiality impact is low, integrity impact is high, and availability impact is low as per the CVSS vector.
Mitigation Recommendations
Red Hat has released an updated version, Red Hat build of Keycloak 26.4.11, which addresses this vulnerability. Users should back up their existing installations and apply the update as soon as possible. The vendor advisory provides official fixes and updated container images for OpenShift deployments. No other mitigation or workaround is indicated in the advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- redhat
- Date Reserved
- 2025-12-16T04:56:14.486Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/errata/RHSA-2026:6477","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:6478","vendor":"Red Hat"},{"url":"https://access.redhat.com/security/cve/CVE-2025-14777","vendor":"Red Hat"}]
Threat ID: 6940ec04a4f72ecfcafbad2a
Added to database: 12/16/2025, 05:20:04 UTC
Last enriched: 08/05/2026, 13:42:10 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 791
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