CVE-2026-16072: Keycloak-services: keycloak-services: organization invitation link exposure allows unauthorized member creation

Severity: medium (CVSS 4.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-17 · updated 2026-09-16
Weakness: CWE-497

Description

A flaw was found in the organization management component of Keycloak. A delegated administrator with permission to manage organizations can create an invitation for a non-existent email address and then retrieve the secret registration link directly through the application programming interface. By using this link, the administrator can create new user accounts and add them to the organization without having the required user management permissions or access to the invited email account. This allows an administrator to bypass security boundaries and add unauthorized members to an organization.

Affected products

Red Hat build of Keycloak 26.4: all versions

References

Get alerted when CVE-2026-16072 or the next vulnerability affects your stack