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.
Affected products
redhat: build of keycloak
References3
- access.redhat.com/security/cve/CVE-2026-4628 Vendor Advisory
- bugzilla.redhat.com/show_bug.cgi?id=2450240 Issue TrackingVendor Advisory
- access.redhat.com/errata/RHSA-2026:19596
Metrics
- CVSS 3.1
-
4.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N - EPSS — exploit probability
- 0% percentile: 19 · as of 12 November 2026
- CWE
- CWE-284
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