CVE-2020-36867: Nagios XI

High severity, CVSS 8.8. EPSS: 2.5% chance of exploitation in the next 30 days.

Nagios XI versions prior to 5.7.3 contain a command injection vulnerability in the report PDF download/export functionality. User-supplied values used in the PDF generation pipeline or the wrapper that invokes offline/pdf helper utilities were insufficiently validated or improperly escaped, allowing an authenticated attacker who can trigger PDF exports to inject shell metacharacters or arguments.

Affected products

• Nagios Nagios XI: before 5.7.3 (fixed in 5.7.3)

Published 2025-10-30. Last modified 2026-06-17.