CVE-2026-18207
Medium
Description
A flaw was found in the client policy enforcement mechanism of Keycloak. The issue occurs when the system checks group membership by name instead of a unique identifier. An attacker with client management privileges could bypass security policies by joining a group with a matching name in a different part of the group hierarchy, potentially allowing them to register or update clients without following required security hardening profiles.
SeverityMedium
CVSS6.5
Exploit probability—
Product
Redhat Build Of Keycloak
PublishedJul 29, 2026
First seenJul 29, 2026
Weakness typeCWE-285CWE-285
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| redhat build_of_keycloak | No range specified | — |
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