CVE-2020-27990: Nagios XI

Medium severity, CVSS 5.4. EPSS: 34.4% chance of exploitation in the next 30 days.

Nagios XI before 5.7.5 is vulnerable to XSS in the Deployment tool (add agent).

Affected products

• Nagios Nagios XI: before 5.7.5 (fixed in 5.7.5)

Published 2020-11-16. Last modified 2026-06-17.