CVE-2026-9791

[CVE catalog]

Severity

Medium · CVSS 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Published

May 27, 2026, 10:00:00 PM UTC

Source

[NVD] · [CVE record]

EPSS

0.21% · Oct 25, 2026

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. keycloak-rhel9: Organization Data Leak After Feature Disabled in Keycloak Keycloak fails to enforce the disabled state of the Organizations feature on user-facing APIs, allowing authenticated users to retrieve organization membership data and obtain tokens with organization claims even after an administrator has disabled the feature at the realm level. The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.