Is CVE-2026-18214 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-18214?

CVE-2026-18214 has a CVSS v3 severity of MEDIUM (6.8).

Back

CVE-2026-18214

Description

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.