CVE-2026-16105

MEDIUM

Keycloak-services: keycloak-services: missing per-role authorization on rolecontainerresource composite endpoints

Title source: cna
STIX 2.1

Description

A flaw was found in the RoleContainerResource component of Keycloak. The issue occurs because certain name-based endpoints in the admin REST API do not properly enforce authorization checks when managing composite roles. This allows a delegated administrator with manage-realm permissions to remove essential child roles from built-in admin roles, potentially disrupting administrative functions within a realm.

References (2)

Core 2
Core References
Vdb Entry, X_Refsource_Redhat vdb-entry x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-16105
Issue Tracking, X_Refsource_Redhat issue-tracking x_refsource_redhat
RHBZ#2501738
https://bugzilla.redhat.com/show_bug.cgi?id=2501738

Scores

CVSS v3 4.9
EPSS 0.0019
EPSS Percentile 9.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-862
Status published
Products (5)
Red Hat/Red Hat Build of Keycloak
Red Hat/Red Hat Data Grid 8
Red Hat/Red Hat JBoss Enterprise Application Platform Expansion Pack
Red Hat/Red Hat Single Sign-On 7
redhat/build_of_keycloak
Published Jul 31, 2026
Tracked Since Jul 31, 2026