CVE-2026-9792
6.5 MEDIUMA flaw was found in Keycloak's Client Policies, specifically within the `org.keycloak.protocol.oidc` component
Published: 2026-05-28 · Last updated: 2026-06-10
Severity and scoring
- CVSS
- 6.5 MEDIUM
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- CWE
- CWE-280
Affected products
| Vendor | Product |
|---|---|
| redhat | build_of_keycloak |
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.
Source: NVD
References
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