CVE-2026-16108
Medium
Description
A flaw was found in the default-groups REST endpoint and realm representation of Keycloak. This component is responsible for managing groups that are automatically assigned to new users within a realm. The issue allows a delegated administrator with realm-viewing permissions to see the names and identifiers of hidden default groups, even if they lack the specific permissions to view those groups. This can lead to the exposure of sensitive organizational structures or internal group names.
SeverityMedium
CVSS4.3
Exploit probability—
Product
Redhat Build Of Keycloak
PublishedJul 17, 2026
First seenJul 17, 2026
Weakness typeCWE-1220CWE-1220
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| redhat build_of_keycloak | No range specified | — |
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