Description
A flaw was found in the Dynamic Client Registration service of Keycloak, an open-source identity and access management solution. The issue occurs when a user with the view-clients role accesses the client registration endpoint to retrieve client details. Due to a failure to mask sensitive information, the service returns the client's confidential secret in cleartext. This could allow a read-only administrator to obtain full access to the affected client's account and potentially escalate their privileges within the realm.
Published: 2026-09-11
Score: 4.9 Medium
EPSS: n/a
KEV: No
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Remediation

Vendor 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.

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History

Fri, 11 Sep 2026 13:45:00 +0000

Type Values Removed Values Added
Description A flaw was found in the Dynamic Client Registration service of Keycloak, an open-source identity and access management solution. The issue occurs when a user with the view-clients role accesses the client registration endpoint to retrieve client details. Due to a failure to mask sensitive information, the service returns the client's confidential secret in cleartext. This could allow a read-only administrator to obtain full access to the affected client's account and potentially escalate their privileges within the realm.
Title Keycloak-services: keycloak-services: confidential client secret disclosed to view-clients role via client registration get
First Time appeared Redhat
Redhat build Keycloak
Redhat red Hat Single Sign On
Weaknesses CWE-200
CPEs cpe:/a:redhat:build_keycloak:
cpe:/a:redhat:red_hat_single_sign_on:7
Vendors & Products Redhat
Redhat build Keycloak
Redhat red Hat Single Sign On
References
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N'}


Subscriptions

Redhat Build Keycloak Red Hat Single Sign On
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-09-11T14:55:17.101Z

Reserved: 2026-09-11T13:13:39.831Z

Link: CVE-2026-89298

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-11T14:17:37.173

Modified: 2026-09-11T15:17:09.430

Link: CVE-2026-89298

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses