CVE-2026-4628
Medium
Description
A flaw was found in Keycloak. An improper Access Control vulnerability in Keycloak’s User-Managed Access (UMA) resource_set endpoint allows attackers with valid credentials to bypass the allowRemoteResourceManagement=false restriction. This occurs due to incomplete enforcement of access control checks on PUT operations to the resource_set endpoint. This issue enables unauthorized modification of protected resources, impacting data integrity.
SeverityMedium
CVSS4.3
Exploit probability—
Product
Redhat Build Of Keycloak
PublishedMar 23, 2026
First seenMar 23, 2026
Weakness typeCWE-284Improper access control
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| redhat build_of_keycloak | No range specified | — |
| org.keycloak:keycloak-servicesMaven | v ≤ 26.6.0 | — |
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