by Kastro CVE-2026-120984
Red Hat Red Hat Build of Keycloak — Keycloak-services: keycloak-services: manage-clients to arbitrary code execution through inline javascript policy import
Description · from the CVE record
A flaw was found in the Keycloak server's client management component. When a client is created or imported with authorization services enabled, the system fails to properly clear an internal session attribute used during the setup process. This allows an authenticated attacker with client management permissions to bypass security controls and upload a malicious JavaScript policy, which is then executed on the server when an authorization request is made. Successful exploitation could allow the attacker to run arbitrary code on the server, potentially compromising the entire system.
Affected
ProductAffectedFixed inSource
Red Hat Build of Keycloaksee advisory–CNA
Red Hat Build of Keycloaksee advisory–CNA
Red Hat Single Sign-On 7see advisory–CNA
Scores by source
redhat (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H