← Vulnerability feed

Vulnerability record · CVE-2025-34278 · published 30 October 2025

CVE-2025-34278: Nagios network analyzer cross-site scripting vulnerability

Nagios · Network Analyzer

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.

5.1 CVSS 4.0 Medium EPSS 0.71% · top 48.5% CWE-79 · Cross-site scripting
5.1CVSS 4.0 base score
0.71%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.nagios.com/changelog/#network-analyzer Release Notes
https://www.nagios.com/products/security/#network-analyzer Product
https://www.vulncheck.com/advisories/nagios-network-analyzer-source-groups-percentile-calculator-menu-stored-xss Third Party Advisory

Track CVE-2025-34278 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-28925Nagios network analyzer sql injection vulnerabilitySQL injection vulnerability in Nagios Network Analyzer before 2.4.3 via the o[col] parameter to api/checks/read/.EPSS 4.8%8.6CVE-2025-34280Nagios network analyzer os command injection vulnerabilityNagios Network Analyzer versions prior to 2024R2.0.1 contain a vulnerability in the LDAP certificate management functionality whereby the certificate…EPSS 1.3%7.5CVE-2025-28059Nagios network analyzer insufficient session expiration vulnerabilityAn access control vulnerability in Nagios Network Analyzer 2024R1.0.3 allows deleted users to retain access to system resources due to improper sessi…EPSS 0.82%6.1CVE-2021-28924Nagios network analyzer cross-site scripting vulnerabilitySelf Authenticated XSS in Nagios Network Analyzer before 2.4.2 via the nagiosna/groups/queries page.EPSS 11%5.1CVE-2023-7319Nagios network analyzer cross-site scripting vulnerabilityNagios Network Analyzer versions prior to 2024R1 are vulnerable to cross-site scripting (XSS) via the Percentile Calculator menu. Insufficient valida…EPSS 0.48%4.6CVE-2025-28131Nagios network analyzer improper authorization vulnerabilityA Broken Access Control vulnerability in Nagios Network Analyzer 2024R1.0.3 allows low-privilege users with "Read-Only" access to perform administrat…EPSS 0.40%6.1CVE-2026-42897Microsoft Exchange Server XSS enables spoofingMicrosoft Exchange Server and Exchange Server Subscription Edition fail to neutralize input during web page generation, a cross-site scripting flaw (…KEVEPSS 0.52%analysed6.1CVE-2025-48700Zimbra Classic UI stored XSS via crafted email HTMLZimbra Collaboration Suite Classic UI fails to properly sanitize HTML content in email messages, allowing crafted tag structures and attribute values…KEVEPSS 1.7%analysed

Source: NIST National Vulnerability Database (record CVE-2025-34278), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.