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Vulnerability record · CVE-2020-16157 · published 30 July 2020

CVE-2020-16157: Nagios log server cross-site scripting vulnerability

Nagios · Log Server

A Stored XSS vulnerability exists in Nagios Log Server before 2.1.7 via the Notification Methods -> Email Users menu.

5.4 CVSS 3.1 Medium EPSS 14% · top 3.5% CWE-79 · Cross-site scripting
5.4CVSS 3.1 base score, v2 3.5
14%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A Stored XSS vulnerability exists in Nagios Log Server before 2.1.7 via the Notification Methods -> Email Users menu.

CVSS:3.1/AV:N/AC:L/PR:L/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
http://packetstormsecurity.com/files/158992/Nagios-Log-Server-2.1.6-Cross-Site-Scripting.html Broken LinkExploitThird Party AdvisoryVDB Entry
https://www.getastra.com/blog/911/stored-xss-vulnerability-nagios-log-server/ Third Party Advisory
https://www.jinsonvarghese.com/stored-xss-vulnerability-in-nagios-log-server/ Third Party Advisory
https://www.nagios.com/downloads/nagios-log-server/change-log/ Release NotesVendor Advisory
http://packetstormsecurity.com/files/158992/Nagios-Log-Server-2.1.6-Cross-Site-Scripting.html Broken LinkExploitThird Party AdvisoryVDB Entry
https://www.getastra.com/blog/911/stored-xss-vulnerability-nagios-log-server/ Third Party Advisory
https://www.jinsonvarghese.com/stored-xss-vulnerability-in-nagios-log-server/ Third Party Advisory
https://www.nagios.com/downloads/nagios-log-server/change-log/ Release NotesVendor Advisory

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2020-16157), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.