Low severity · published Mar 12, 2026
CVE-2026-2366
Keycloak: keycloak: information disclosure via authorization bypass in admin api
3.1
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat build of Keycloak 26.4 · Red Hat
All versions, or not specified · source: vendor
BO
Build OF Keycloak · Redhat
26.4 before 26.4.11 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2366
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2366
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:6477
Vendor Advisory
https://access.redhat.com/errata/RHSA-2026:6478
Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-2366
Exploit
https://bugzilla.redhat.com/show_bug.cgi?id=2439081
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