CVE-2026-16106 | A flaw was found in the admin REST API of Keycloak, a soluti… | CVSS 4.9 MEDIUM

Description

A flaw was found in the admin REST API of Keycloak, a solution for identity and access management. The issue occurs when a delegated administrator attempts to remove a child role from a composite role. Due to missing authorization checks, an attacker with limited administrative permissions can remove privileged roles they are not authorized to manage, leading to a loss of access for other users and administrators.

Metadata

CVE ID: CVE-2026-16106
State: PUBLISHED
Assigner: redhat
Reserved: 2026-07-17 14:53 UTC
Published: 2026-07-17 16:43 UTC
Last updated: 2026-07-17 16:53 UTC
Primary CWE: CWE-862
CWE-862 Missing Authorization
Vendor / Product: Red Hat / Red Hat Build of Keycloak
Sources: cve.org · NVD

Severity & Metrics

4.9 MEDIUM CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (6)

Vendor	Product	Platform	Versions
Red Hat	Red Hat Build of Keycloak	—	—
Red Hat	Red Hat Build of Keycloak	—	—
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	—	—

Weakness (CWE)

CWE	Source	Description
CWE-862	adp	CWE-862 Missing Authorization

CVSS scores (1)

Score	Severity	Version	Source	Vector
4.9	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

References (2)