🛡️ CVE-2025-14778
🟡 CVSS 5.4 — Medium ✅ No Known Exploit CWE-266 NVD
5.4
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity Medium
CVSS Score 5.4
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CWE CWE-266
Public Exploit ✅ No
Source NVD
Published 2026-02-09
Updated 2026-06-15
Modified 2026-02-13
Fix URL N/A

Affected Packages

Software From version Fixed in
org.keycloak:keycloak-services 26.3.0 26.4.9
unknown — —

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