What’s Vulnerable › Vulnerabilities
CVE-2026-18207: Keycloak-services: keycloak-services: client policy source-group condition bypass via duplicate group name matching
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-29 · updated 2026-08-11
- Weakness: CWE-285
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.
Affected products
- Red Hat build of Keycloak 26.4: all versions
References
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