CVE-2018-20172: Nagios XI

Medium severity, CVSS 6.1. EPSS: 1.6% chance of exploitation in the next 30 days.

An issue was discovered in Nagios XI before 5.5.8. The rss_url parameter of rss_dashlet/magpierss/scripts/magpie_slashbox.php is not filtered, resulting in an XSS vulnerability.

Affected products

• Nagios Nagios XI: before 5.5.8 (fixed in 5.5.8)

Published 2018-12-17. Last modified 2026-06-17.