XSS in Nagios Network Analyzer
CVE-2025-34278
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.007 (51.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Nagios Network Analyzer — versions 0
- Nagios Network Analyzer
Weakness classification (CWE)
References
- www.nagios.com/products/security/ (Product, vendor-advisory, patch)
- www.nagios.com/changelog/ (release-notes, Release Notes, patch)
- www.vulncheck.com/advisories/nagios-network-analyzer-source-groups-percentile-c… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2025-34278?
- CVE-2025-34278 is a medium-severity vulnerability in Nagios Network Analyzer, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-10-30.
- How severe is CVE-2025-34278?
- Medium severity. CVSS v3 base score is 5.4 out of 10.