CVE-2025-14778
MEDIUM EPSS 20.4%
Published Feb 9, 20264mo ago · Modified Apr 15, 20262mo ago
5.4 CVSS 3.1
Published Feb 9, 2026 4mo ago
Last Modified Apr 15, 2026 2mo ago
Description
A flaw was found in Keycloak. A significant Broken Access Control vulnerability exists in the UserManagedPermissionService (UMA Protection API). When updating or deleting a UMA policy associated with multiple resources, the authorization check only verifies the caller's ownership against the first resource in the policy's list. This allows a user (Owner A) who owns one resource (RA) to update a shared policy and modify authorization rules for other resources (e.g., RB) in that same policy, even if those other resources are owned by a different user (Owner B). This constitutes a horizontal privilege escalation.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None
Threat Intelligence
EPSS Exploit Probability
20.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-266
References 6
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:2363
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:2364
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:2365
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:2366
- access.redhat.com https://access.redhat.com/security/cve/CVE-2025-14778
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2422600
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.