Description
A flaw was found in Keycloak. An authenticated user with existing organization membership can exploit this flaw by accessing user-facing APIs, such as the account API or by requesting an OpenID Connect (OIDC) token with the 'organization' scope. This allows organization metadata to be disclosed in tokens, even after an administrator has explicitly disabled the Organizations feature, potentially leading to incorrect authorization decisions by resource servers.
Published: 2026-05-28
Score: 4.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Workaround

Administrators should verify that disabling the Organizations feature properly blocks all organization-related functionality. Consider implementing additional access controls or removing organization memberships before disabling the feature.

Tracking

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Advisories

No advisories yet.

History

Fri, 26 Jun 2026 07:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:build_keycloak:26.4::el9
References

Wed, 10 Jun 2026 21:45:00 +0000

Type Values Removed Values Added
References

Wed, 10 Jun 2026 18:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:build_keycloak: cpe:/a:redhat:build_keycloak:26.6::el9
References

Wed, 03 Jun 2026 18:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat build Of Keycloak
CPEs cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:-:*:*:*
Vendors & Products Redhat build Of Keycloak

Sat, 30 May 2026 23:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat keycloak
Vendors & Products Redhat keycloak

Thu, 28 May 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Thu, 28 May 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Thu, 28 May 2026 04:45:00 +0000

Type Values Removed Values Added
Description A flaw was found in Keycloak. An authenticated user with existing organization membership can exploit this flaw by accessing user-facing APIs, such as the account API or by requesting an OpenID Connect (OIDC) token with the 'organization' scope. This allows organization metadata to be disclosed in tokens, even after an administrator has explicitly disabled the Organizations feature, potentially leading to incorrect authorization decisions by resource servers.
Title Keycloak-rhel9: organization data leak after feature disabled in keycloak
First Time appeared Redhat
Redhat build Keycloak
Weaknesses CWE-863
CPEs cpe:/a:redhat:build_keycloak:
Vendors & Products Redhat
Redhat build Keycloak
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}


Subscriptions

Redhat Build Keycloak Build Of Keycloak Keycloak
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-06-26T06:46:31.401Z

Reserved: 2026-05-28T03:07:29.305Z

Link: CVE-2026-9791

cve-icon Vulnrichment

Updated: 2026-05-28T12:19:14.219Z

cve-icon NVD

Status : Modified

Published: 2026-05-28T05:16:39.977

Modified: 2026-06-17T11:05:38.623

Link: CVE-2026-9791

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-05-28T03:08:53Z

Links: CVE-2026-9791 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-05-30T21:19:28Z

Weaknesses