CVE-2021-37351: Nagios XI

Medium severity, CVSS 5.3. EPSS: 2.8% chance of exploitation in the next 30 days.

Nagios XI before version 5.8.5 is vulnerable to insecure permissions and allows unauthenticated users to access guarded pages through a crafted HTTP request to the server.

Affected products

• Nagios Nagios XI: before 5.8.5 (fixed in 5.8.5)

Published 2021-08-13. Last modified 2026-06-17.