CVE-2026-18214
Medium
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.
SeverityMedium
CVSS6.8
Exploit probability—
Product
Redhat Build Of Keycloak
PublishedJul 31, 2026
First seenJul 31, 2026
Weakness typeCWE-862Missing authorization
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| redhat build_of_keycloak | No range specified | — |
Check your version
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