CVE-2025-34278: Nagios Network Analyzer

Medium severity, CVSS 5.4. EPSS: 0.8% chance of exploitation in the next 30 days.

Nagios Network Analyzer versions prior to 2024R1 contain a stored cross-site scripting (XSS) vulnerability in the Source Groups page (percentile calculator menu). An attacker can supply a malicious payload which is stored by the application and later rendered in the context of other users. When a victim views the affected page the injected script executes in the victim's browser context.

Affected products

• Nagios Network Analyzer: before 2024 (fixed in 2024)

Published 2025-10-30. Last modified 2026-10-07.