---
id: CVE-2026-17526
title: Keycloak is an open-source identity and access management solution
summary: >-
  Keycloak is an open-source identity and access management solution. A
  vulnerability was discovered where a user with the impersonation role can
  impersonate a realm administrator. This allows the attacker to gain full
  administrative contr…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-862
vendor: Red Hat
product: keycloak-rhel9-container
affected:
  - keycloak-rhel9-container (all versions)
  - keycloak-rhel9-operator-container (all versions)
  - rhbk/keycloak-operator-bundle (all versions)
  - keycloak-services
  - rhbk-openshift-rhel9/rhbk-openshift-rhel9
  - keycloak-rhel9-container (all versions)
  - keycloak-rhel9-operator-bundle-container (all versions)
  - keycloak-rhel9-operator-container (all versions)
  - keycloak-services
  - rhbk-keycloak-rhel9/rhbk-keycloak-rhel9
  - rhbk-openshift-rhel9/rhbk-openshift-rhel9
  - keycloak-services
  - keycloak-services
  - keycloak-services
patched:
  - build_of_keycloak 26.4
  - build_of_keycloak 26.4.16
  - build_of_keycloak 26.6.7
published: '2026-09-16'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T19:42:43.623'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-17526'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:68276'
    label: secalert@redhat.com
  - 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/errata/RHSA-2026:68280'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-17526'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2507409'
    label: secalert@redhat.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-17526.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-17526'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-17526'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-16T16:01:08.129861Z'
ingestedAt: '2026-09-16T15:58:38.770Z'
epss: 0.00452
epssPercentile: 0.36513
---

## Overview

Keycloak is an open-source identity and access management solution. A vulnerability was discovered where a user with the impersonation role can impersonate a realm administrator. This allows the attacker to gain full administrative control over the realm, including the ability to manage users, clients, and roles.

## Remediation

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

## Vendor advisories

- **RHSA-2026:68276** · Red Hat · fixed in: Red Hat build of Keycloak 26.4 · released 2026-09-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:68276)
- **RHSA-2026:68280** · Red Hat · fixed in: Red Hat build of Keycloak 26.4.16 · released 2026-09-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:68280)
- **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)