Vulnerability Details CVE-2026-37978
A flaw was found in Keycloak. A low-privilege administrator with the 'view-clients' role can exploit this by invoking the 'evaluate-scopes' Admin API endpoints with an arbitrary user ID (userId) parameter. This vulnerability allows for cross-role personally identifiable information (PII) leakage, enabling unauthorized visibility into user identities and authorizations across the realm. Exploitation is possible remotely via network access to the Admin API.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 2.1%
CVSS Severity
CVSS v3 Score 4.9
References
Products affected by CVE-2026-37978
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cpe:2.3:a:redhat:build_of_keycloak:-
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cpe:2.3:a:redhat:build_of_keycloak:22.0
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cpe:2.3:a:redhat:build_of_keycloak:22.0.10
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cpe:2.3:a:redhat:build_of_keycloak:22.0.11
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cpe:2.3:a:redhat:build_of_keycloak:22.0.12
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cpe:2.3:a:redhat:build_of_keycloak:22.0.13
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cpe:2.3:a:redhat:build_of_keycloak:22.0.7
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cpe:2.3:a:redhat:build_of_keycloak:22.0.8
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cpe:2.3:a:redhat:build_of_keycloak:22.0.9
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cpe:2.3:a:redhat:build_of_keycloak:24.0
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cpe:2.3:a:redhat:build_of_keycloak:24.0.4
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cpe:2.3:a:redhat:build_of_keycloak:24.0.5
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cpe:2.3:a:redhat:build_of_keycloak:24.0.6
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cpe:2.3:a:redhat:build_of_keycloak:24.0.7
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cpe:2.3:a:redhat:build_of_keycloak:24.0.8