Vulnerability in Red Hat Build Of Keycloak 26.4
CVE-2025-14777
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:L.
EPSS exploit prediction
EPSS: 0.003 (25.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.003 · change: -0.000
Affected products
- Red Hat Build Of Keycloak 26.4 — versions 26.4.11-1, 26.4-14
- Red Hat Build Of Keycloak 26.4.11
Weakness classification (CWE)
References
- RHSA-2026:6477 (vendor-advisory)
- RHSA-2026:6478 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2025-14777 (vdb-entry)
- RHBZ#2422596 (issue-tracking)
Frequently asked questions
- What is CVE-2025-14777?
- CVE-2025-14777 is a medium-severity vulnerability in Red Hat Build Of Keycloak 26.4, classified under CWE-289. CVSS score: 6.0/10. Published 2025-12-16.
- How severe is CVE-2025-14777?
- Medium severity. CVSS v3 base score is 6.0 out of 10.