CVE-2026-9792
Medium
Description
A flaw was found in Keycloak's Client Policies, specifically within the `org.keycloak.protocol.oidc` component. When certain condition providers (client-type, client-roles, client-attributes, client-scopes) are used to enforce security restrictions, the `reject-ropc-grant` executor is silently bypassed. This allows an unauthenticated remote attacker to obtain tokens via a Resource Owner Password Credentials (ROPC) grant, even when a policy is explicitly configured to block it. This bypass can lead to unauthorized access and information disclosure.
SeverityMedium
CVSS6.5
Exploit probability19. percentile0.3%
Product
Redhat Build Of Keycloak
PublishedMay 28, 2026
First seenMay 28, 2026
Weakness typeCWE-280CWE-280
How to fix
Update
- org.keycloak:keycloak-services26.6.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| redhat build_of_keycloak | No range specified | — |
| org.keycloak:keycloak-servicesMaven | 26.5.0 ≤ v < 26.6.3, v ≤ 26.4.7 | 26.6.3 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.