CVE-2026-4628
MEDIUMKeycloak: org.keycloak.authorization: keycloak: unauthorized resource modification due to improper access control
Title source: cnaDescription
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)
Core 2
Core References
Vdb Entry, X_Refsource_Redhat vdb-entry
x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-4628
Issue Tracking, X_Refsource_Redhat issue-tracking
x_refsource_redhat
RHBZ#2450240
https://bugzilla.redhat.com/show_bug.cgi?id=2450240
Scores
CVSS v3
4.3
EPSS
0.0020
EPSS Percentile
10.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
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