CVE-2026-4628 — Keycloak: org.keycloak.authorization: keycloak: unauthorized resource modification due to improper access control
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 b…
Published: 2026-03-23 · CVSS: 4.3 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7