CVE-2026-94217
Keycloak-services: keycloak-services: uma scope merge across resource owners via resource name collision
- State
- Published
- Severity
- 3.5 Low
- Published
- Sep 21, 2026
- Updated
- Sep 24, 2026
- Reserved
- Sep 21, 2026
Description
A flaw was found in the User-Managed Access (UMA) implementation of Keycloak. The issue occurs in the authorization token endpoint when processing permission tickets. If two different users own resources with the same name, the system incorrectly merges the permissions from both resources when one user requests an authorization token. This allows an attacker to gain access scopes on a victim's resource that were never intended to be shared.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 3.5 Low | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N | redhat |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
Red Hat Build of KeycloakRed Hat | |
Red Hat Build of KeycloakRed Hat | |
Red Hat Build of KeycloakRed Hat | |
Red Hat Single Sign-On 7Red Hat |
References
- https://access.redhat.com/security/cve/CVE-2026-94217vdb-entry
- RHBZ#2537313issue-tracking
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