CVE-2025-34227: Nagios XI

High severity, CVSS 8.8. EPSS: 24.3% chance of exploitation in the next 30 days.

Nagios XI < 2026R1 is vulnerable to an authenticated command injection vulnerability within the MongoDB Database, MySQL Query, MySQL Server, Postgres Server, and Postgres Query wizards. It is possible to inject shell characters into arguments provided to the service and execute arbitrary system commands on the underlying host as the `nagios` user.

Affected products

• Nagios Nagios XI: up to and including 2026

Published 2025-09-25. Last modified 2026-06-17.