CVE-2026-2366
LOW3.1EPSS 0.01%Keycloak vulnerable to authorization bypass via the Admin API
Published: 3/12/2026Modified: 4/2/2026
Also known as:GHSA-r8jr-wg88-fq5c
Description
A flaw was found in Keycloak. An authorization bypass vulnerability in the Keycloak Admin API allows any authenticated user, even those without administrative privileges, to enumerate the organization memberships of other users. This information disclosure occurs if the attacker knows the victim's unique identifier (UUID) and the Organizations feature is enabled.
Affected packages (2)
- Maven/org.keycloak:keycloak-js-admin-clientfrom 0, <= 26.5.5
- npm/@keycloak/keycloak-admin-clientfrom 0, <= 26.5.5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | LOW3.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N |
References (7)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-2366
- PATCHhttps://github.com/keycloak/keycloak
- WEBhttps://access.redhat.com/errata/RHSA-2026:6477
- WEBhttps://access.redhat.com/errata/RHSA-2026:6478
- WEBhttps://access.redhat.com/security/cve/CVE-2026-2366
- WEBhttps://bugzilla.redhat.com/show_bug.cgi?id=2439081
- WEBhttps://github.com/keycloak/keycloak/issues/47062