Vulnerability · Published Oct 30, 2025 · Assigned by VulnCheck

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

Medium 5.1

In plain English

A medium-severity cross-site scripting in Network Analyzer from Nagios. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 55% of all known vulnerabilities).

Severity (CVSS 4.0)5.1Medium

Exploit odds (30 days)0.8%top 44.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
Nagios	Network Analyzer	0 – before 2024R1

Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

References

https://www.nagios.com/products/security/#network-analyzer vendor-advisory, patch
https://www.nagios.com/changelog/#network-analyzer release-notes, patch
https://www.vulncheck.com/advisories/nagios-network-analyzer-source-groups-percentile-calculator-menu-stored-xss third-party-advisory