CVE-2023-40932

Name: CVE-2023-40932
Creator: NVD / NIST
Published: 2023-09-19T23:15:10.237+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 1.98%

Last modified Jun 17, 2026

CVE-2023-40932 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. A Cross-site scripting (XSS) vulnerability in Nagios XI version 5.11.1 and below allows authenticated attackers with access to the custom logo component to inject arbitrary javascript or HTML via the alt-text field. This affects all pages containing the navbar including the login page which means the attacker is able to to steal plaintext credentials.. EPSS estimates a 1.98% chance of exploitation in the next 30 days.

Description

A Cross-site scripting (XSS) vulnerability in Nagios XI version 5.11.1 and below allows authenticated attackers with access to the custom logo component to inject arbitrary javascript or HTML via the alt-text field. This affects all pages containing the navbar including the login page which means the attacker is able to to steal plaintext credentials.

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

1.98%

78.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Nagios	Nagios Xi	< 5.11.2

References

http://nagios.comProduct
https://outpost24.com/blog/nagios-xi-vulnerabilities/Third Party Advisory
https://www.nagios.com/products/security/Vendor Advisory
http://nagios.comProduct
https://outpost24.com/blog/nagios-xi-vulnerabilities/Third Party Advisory
https://www.nagios.com/products/security/Vendor Advisory

Timeline

Published: Sep 19, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-40932?

How severe is CVE-2023-40932?

CVE-2023-40932 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 1.98% probability of exploitation in the next 30 days.

How do I fix CVE-2023-40932?

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-2023-40932?

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

Scan your code now

Source: NVD / NIST