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.
Metrics
CVSS 3.1 8.1/10
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat build of Keycloak 26.6 | — |
| Red Hat | Red Hat build of Keycloak 26.6 | — |
| Red Hat | Red Hat build of Keycloak 26.6 | — |
| Red Hat | Red Hat build of Keycloak 26.6.7 | — |
| Red Hat | Red Hat build of Keycloak 26.6.7 | — |
| Red Hat | Red Hat build of Keycloak 26.6.7 | — |
| Red Hat | Red Hat Data Grid 8 | — |
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack | — |
| Red Hat | Red Hat Single Sign-On 7 | — |
References
Timeline
- Published
- Jul 31, 2026
- Last modified
- Sep 16, 2026
- NVD status
- Modified