CVE-2026-4628 MEDIUM

CVE-2026-4628: Keycloak: org.keycloak.authorization: keycloak: unauthorized resource modification due to improper access control

Vendor Red Hat
Product Red Hat Build of Keycloak
Weakness CWE-284
Published March 23, 2026
Last update March 25, 2026
View on NVD All CVEs

CVSS base score

4.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 23, 2026 CVE published
March 25, 2026 Record updated