Vulnerability Details CVE-2026-18214
Keycloak allows users to log in using Google accounts and can be configured to only allow users from specific Google Workspace domains. A flaw was found where the token exchange feature, which allows swapping a Google token for a Keycloak token, does not check these domain restrictions. This means an attacker with a valid Google account from a different domain could bypass the security check and gain access to the Keycloak realm.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 8.7%
CVSS Severity
CVSS v3 Score 6.8
References
Products affected by CVE-2026-18214
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cpe:2.3:a:redhat:build_of_keycloak:-