cvedb.io
CVE-2026-4636
HIGH · CVSS 8.1
EPSS exploitation probability: 0%
Published 2026-04-02T13:16:27.210 · Last modified 2026-06-30T03:20:35.620

Summary

A flaw was found in Keycloak. An authenticated user with the uma_protection role can bypass User-Managed Access (UMA) policy validation. This allows the attacker to include resource identifiers owned by other users in a policy creation request, even if the URL path specifies an attacker-owned resource. Consequently, the attacker gains unauthorized permissions to victim-owned resources, enabling them to obtain a Requesting Party Token (RPT) and access sensitive information or perform unauthorized actions.

Affected products

redhat — build_of_keycloak

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.