CVE-2026-18207Medium· 6.5▾ SunlitA 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…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 35.8 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake. The CVSS score shown above comes from the assigning CNA record, not NVD.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.3%
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.
keycloak-servicesrhbk-keycloak-rhel9/rhbk-keycloak-rhel9rhbk-openshift-rhel9/rhbk-openshift-rhel9keycloak-serviceskeycloak-serviceskeycloak-servicesRefer to the linked advisories for vendor-supplied fixes and affected version ranges.
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Connected by shared product, vendor, weakness, or advisory.
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CVE-2026-109081Medium· 6.8Keycloak-services: keycloak-services: injection of roles into realm default-roles via dcr endpoint
CVE-2026-107124Medium· 6.4Keycloak-services: keycloak-services: oidc logout endpoint session fixation via id_token_hint leading to account takeover
CVE-2026-96447Medium· 4.2Keycloak-services: keycloak-services: stateless token preferred_username fallback enables identity rebinding
CVE-2026-19688Medium· 6.8Keycloak-services: keycloak-services: admin api missing audience check