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CVE-2026-9792

Keycloak: keycloak: security restriction bypass allows unauthorized ropc token acquisition

Published: May 28, 2026Updated: May 28, 2026 Sources: CVE List NVD
NVD MITRE
6.5CVSS
MEDIUM

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.

EPSS Score
N/A
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None

Weaknesses

CWE-280

Affected Products

Red Hat Build of Keycloak
Red Hat

Exploitability

Workaround Available

References

https://access.redhat.com/security/cve/CVE-2026-9792
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2482459
bugzilla.redhat.com

Timeline

Published
May 28, 2026
Last Updated
May 28, 2026

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