CVE-2020-36858: Nagios Log Server

Medium severity, CVSS 5.4. EPSS: 0.5% chance of exploitation in the next 30 days.

Nagios Log Server versions prior to 2.1.6 contain cross-site scripting (XSS) vulnerabilities via the web interface on the Create User, Edit User, and Manage Host Lists pages. Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the context of a victim's browser.

Affected products

• Nagios Log Server: before 2.1.6 (fixed in 2.1.6)

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