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.

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Solution

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Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

History

Wed, 16 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 16 Sep 2026 17:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat jboss Data Grid
Redhat jbosseapxp
Redhat red Hat Single Sign On
CPEs cpe:/a:redhat:jboss_data_grid:8
cpe:/a:redhat:jbosseapxp
cpe:/a:redhat:red_hat_single_sign_on:7
Vendors & Products Redhat jboss Data Grid
Redhat jbosseapxp
Redhat red Hat Single Sign On

Wed, 16 Sep 2026 16:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Keycloak-services: keycloak-services: privilege escalation via impersonation role allows takeover of realm administrator accounts
First Time appeared Redhat
Redhat build Keycloak
Weaknesses CWE-862
CPEs cpe:/a:redhat:build_keycloak:26.4::el9
cpe:/a:redhat:build_keycloak:26.6::el9
Vendors & Products Redhat
Redhat build Keycloak
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-09-16T18:09:00.607Z

Reserved: 2026-07-27T08:39:49.751Z

Link: CVE-2026-17526

cve-icon Vulnrichment

Updated: 2026-09-16T16:01:31.887Z

cve-icon NVD

Status : Received

Published: 2026-09-16T16:17:04.647

Modified: 2026-09-16T17:17:16.037

Link: CVE-2026-17526

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses