CVE-2018-19367: Portainer

Critical severity, CVSS 9.8. EPSS: 1.5% chance of exploitation in the next 30 days.

Portainer through 1.19.2 provides an API endpoint (/api/users/admin/check) to verify that the admin user is already created. This API endpoint will return 404 if admin was not created and 204 if it was already created. Attackers can set an admin password in the 404 case.

Affected products

• Portainer Portainer: up to and including 1.19.2

Published 2018-11-20. Last modified 2026-06-17.