What’s Vulnerable › Vulnerabilities

CVE-2025-34278: Nagios Network Analyzer < 2024R1 Source Groups / Percentile Calculator Menu Stored XSS

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-10-30 · updated 2026-10-07
• Weakness: CWE-79

Description

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

How to fix

Upgrade to a fixed version: Nagios Network Analyzer 2024. Check the vendor advisory for mitigations.

References

• https://www.nagios.com/changelog/#network-analyzer
• https://www.nagios.com/products/security/#network-analyzer
• https://www.vulncheck.com/advisories/nagios-network-analyzer-source-groups-percentile-calculator-menu-stored-xss

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