---
id: CVE-2026-15945
title: >-
  A flaw was found in the group search functionality of the Keycloak server's
  administrative API
summary: >-
  A flaw was found in the group search functionality of the Keycloak server's
  administrative API. When Fine-Grained Admin Permissions (FGAP) v2 is enabled,
  a delegated administrator can bypass access restrictions to view parent groups
  they…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-639
vendor: redhat
product: build_of_keycloak
affected:
  - build_of_keycloak
  - data_grid = 8.0
  - jboss_enterprise_application_platform_expansion_pack
  - single_sign-on = 7.0
patched:
  - build_of_keycloak 26.6.7
published: '2026-07-16'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T19:17:06.900'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-15945'
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-2026-15945'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2501302'
    label: secalert@redhat.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-15945.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-15945'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-15945'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00348
epssPercentile: 0.25756
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-07-17T13:59:59.366659Z'
ingestedAt: '2026-08-09T15:33:36.298Z'
---

## Overview

A flaw was found in the group search functionality of the Keycloak server's administrative API. When Fine-Grained Admin Permissions (FGAP) v2 is enabled, a delegated administrator can bypass access restrictions to view parent groups they are not authorized to see. By searching for a child group they have permission to view, the system incorrectly returns the full details of the parent group in the response, leading to the disclosure of sensitive group attributes and configuration.

## Affected

- `build_of_keycloak`
- `data_grid = 8.0`
- `jboss_enterprise_application_platform_expansion_pack`
- `single_sign-on = 7.0`

## 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)
- **Red Hat VEX** · Moderate · affected: Red Hat Data Grid 8, Red Hat JBoss Enterprise Application Platform Expansion Pack, Red Hat Single Sign-On 7 · no fix planned: Red Hat Data Grid 8, Red Hat JBoss Enterprise Application Platform Expansion Pack, Red Hat Single Sign-On 7 · updated 2026-09-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-15945.json)
- **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)