CVE-2020-16157

Name: CVE-2020-16157
Creator: NVD / NIST
Published: 2020-07-30T15:15:13.387+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 14.41%

Last modified Jun 17, 2026

CVE-2020-16157 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. A Stored XSS vulnerability exists in Nagios Log Server before 2.1.7 via the Notification Methods -> Email Users menu.. EPSS estimates a 14.41% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

14.41%

96.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Nagios	Log Server	< 2.1.7

References

http://packetstormsecurity.com/files/158992/Nagios-Log-Server-2.1.6-Cross-Site-Scripting.htmlBroken Link, Exploit, Third Party Advisory, VDB 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 Notes, Vendor Advisory
http://packetstormsecurity.com/files/158992/Nagios-Log-Server-2.1.6-Cross-Site-Scripting.htmlBroken Link, Exploit, Third Party Advisory, VDB 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 Notes, Vendor Advisory

Timeline

Published: Jul 30, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-16157?

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

How severe is CVE-2020-16157?

CVE-2020-16157 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 14.41% probability of exploitation in the next 30 days.

How do I fix CVE-2020-16157?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-16157?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST