CVE-2026-4628

MEDIUM

Keycloak: org.keycloak.authorization: keycloak: unauthorized resource modification due to improper access control

Title source: cna

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.

References (2)

[Vdb Entry, X_Refsource_Redhat] https://access.redhat.com/security/cve/CVE-2026-4628

[Issue Tracking, X_Refsource_Redhat] https://bugzilla.redhat.com/show_bug.cgi?id=2450240

Scores

CVSS v3 4.3

EPSS 0.0003

EPSS Percentile 7.0%

Attack Vector NETWORK

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

Details

CWE

CWE-284

Status published

Products (6)

org.keycloak/keycloak-services 0Maven

Red Hat/Red Hat Build of Keycloak

Red Hat/Red Hat JBoss Enterprise Application Platform 8

Red Hat/Red Hat JBoss Enterprise Application Platform Expansion Pack

Red Hat/Red Hat Single Sign-On 7

redhat/build_of_keycloak

Published Mar 23, 2026

Tracked Since Mar 23, 2026