23 Oct 2026 15:48:27 UTC
Keycloak-services: keycloak-services: google external access-token exchange bypasses hosted-domain restriction
cve-program · CVE-2026-18214 · Published
CVE-2026-18214
Keycloak-services: keycloak-services: google external access-token exchange bypasses hosted-domain restriction
CVSS 3.1 6.8 MEDIUMCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-18214
PublishedKeycloak 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.
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