CVE-2018-15711: Nagios XI

High severity, CVSS 8.8. EPSS: 36% chance of exploitation in the next 30 days.

Nagios XI 5.5.6 allows remote authenticated attackers to reset and regenerate the API key of more privileged users. The attacker can then use the new API key to execute API calls at elevated privileges.

Affected products

• Nagios Nagios XI: version 5.5.6 only

Published 2018-11-14. Last modified 2026-06-17.