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.
References
Configurations
No configuration.
History
10 Feb 2026, 02:15
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09 Feb 2026, 21:15
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09 Feb 2026, 20:15
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Information
Published : 2026-02-09 20:15
Updated : 2026-02-10 02:15
NVD link : CVE-2025-14778
Mitre link : CVE-2025-14778
CVE.ORG link : CVE-2025-14778
JSON object : View
Products Affected
No product.
CWE
CWE-266
Incorrect Privilege Assignment