← Vulnerability feed

Vulnerability record · CVE-2021-28924 · published 8 April 2021

CVE-2021-28924: Nagios network analyzer cross-site scripting vulnerability

Nagios · Network Analyzer

Self Authenticated XSS in Nagios Network Analyzer before 2.4.2 via the nagiosna/groups/queries page.

6.1 CVSS 3.1 Medium EPSS 11% · top 4.4% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score, v2 4.3
11%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Self Authenticated XSS in Nagios Network Analyzer before 2.4.2 via the nagiosna/groups/queries page.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

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

References

LinkTags
https://medium.com/stolabs/issues-found-on-nagios-network-analyzer-2-4-2-50ec4ffb5e25 ExploitThird Party Advisory
https://www.nagios.com/downloads/nagios-network-analyzer/change-log/ Release NotesVendor Advisory
https://medium.com/stolabs/issues-found-on-nagios-network-analyzer-2-4-2-50ec4ffb5e25 ExploitThird Party Advisory
https://www.nagios.com/downloads/nagios-network-analyzer/change-log/ Release NotesVendor Advisory

Track CVE-2021-28924 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%5.1CVE-2025-34278Nagios network analyzer cross-site scripting vulnerabilityNagios Network Analyzer versions prior to 2024R1 contain a stored cross-site scripting (XSS) vulnerability in the Source Groups page (percentile calc…EPSS 0.71%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-2021-28924), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.