Bug 2547941 (CVE-2026-107604)

Summary: CVE-2026-107604 keycloak-services: keycloak-services: view-clients role allows retrieval of active client secrets via installation provider endpoints
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: aschwart, aszczucz, boliveir, drichtar, mposolda, pjindal, rmartinc, ssilvert, sthorger, vmuzikar
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the installation provider and client registration endpoints of the Keycloak identity management service. A realm administrator with only the read-only view-clients role can access the active primary secret of any confidential client, which should normally be restricted. This exposed secret can be used to impersonate the client and gain unauthorized access to its associated service account permissions.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-10-08 12:55:56 UTC 
A flaw was found in the Admin REST installation provider endpoints and the Client Registration install endpoint in Keycloak. While the dedicated client-secret endpoint correctly enforces authorization, these specific endpoints fail to mask the client secret when accessed by a user with the realm-management:view-clients role. An authenticated attacker with this role can retrieve the cleartext secret of any confidential client using the client-secret authenticator. Successful exploitation allows the attacker to obtain a client-credentials access token and exercise the target client's service account permissions. This issue represents an incomplete fix for CVE-2026-89298.