---
id: CVE-2026-18570
title: >-
  A flaw was found in the full-scope-disabled client-policy executor within the
  keycloak-services component
summary: >-
  A flaw was found in the full-scope-disabled client-policy executor within the
  keycloak-services component. This component is responsible for enforcing
  security policies during client registration and configuration in Red Hat
  Build of Key…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'
cwe:
  - CWE-862
vendor: redhat
product: build_of_keycloak
affected:
  - build_of_keycloak
patched:
  - build_of_keycloak 26.6.7
published: '2026-08-02'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T19:17:09.490'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-18570'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:68277'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:68278'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-18570'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2509756'
    label: secalert@redhat.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-18570.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-18570'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-18570'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00305
epssPercentile: 0.20664
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-08-03T19:17:25.256268Z'
ingestedAt: '2026-08-02T13:18:29.704Z'
---

## Overview

A flaw was found in the full-scope-disabled client-policy executor within the keycloak-services component. This component is responsible for enforcing security policies during client registration and configuration in Red Hat Build of Keycloak. The issue occurs because the executor only validates the fullScopeAllowed field when it is explicitly provided in a request. By omitting this field, a delegated user can bypass the policy, resulting in a client created with full scope access. This allows the client to obtain tokens with unauthorized role mappings.

## Affected

- `build_of_keycloak`

## Remediation

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

## Vendor advisories

- **RHSA-2026:68278** · Red Hat · fixed in: Red Hat build of Keycloak 26.6.7 · released 2026-09-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:68278)
- **RHSA-2026:68277** · Red Hat · fixed in: Red Hat build of Keycloak 26.6 · released 2026-09-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:68277)