CVE-2021-26023: Nagios Favorites

Medium severity, CVSS 6.1. EPSS: 25.2% chance of exploitation in the next 30 days.

The Favorites component before 1.0.2 for Nagios XI 5.8.0 is vulnerable to XSS.

Affected products

• Nagios Favorites: before 1.0.2 (fixed in 1.0.2)

Published 2021-02-03. Last modified 2026-06-17.