---
id: CVE-2026-11986
title: >-
  A flaw was found in the admin-ui-ext component of Keycloak, which provides
  extended administrative user interface capabilities
summary: >-
  A flaw was found in the admin-ui-ext component of Keycloak, which provides
  extended administrative user interface capabilities. The issue occurs because
  certain bulk role-removal endpoints fail to perform granular permission checks
  when …
severity: medium
cvss: 4.9
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N'
cwe:
  - CWE-425
published: '2026-06-11'
updated: '2026-08-05'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-11986'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:50848'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:50849'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-11986'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2487906'
    label: secalert@redhat.com
tags:
  - nvd
epss: 0.00301
epssPercentile: 0.22997
ingestedAt: '2026-08-06T18:01:39.708Z'
---

## Overview

A flaw was found in the admin-ui-ext component of Keycloak, which provides extended administrative user interface capabilities. The issue occurs because certain bulk role-removal endpoints fail to perform granular permission checks when deleting role mappings. This allows a delegated administrator with limited permissions to remove highly privileged roles from other users or groups, potentially disrupting administrative access control.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.