CVE-2023-40931

Name: CVE-2023-40931
Creator: NVD / NIST
Published: 2023-09-19T23:15:09.153+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 13.48%

Last modified Jun 17, 2026

CVE-2023-40931 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A SQL injection vulnerability in Nagios XI from version 5.11.0 up to and including 5.11.1 allows authenticated attackers to execute arbitrary SQL commands via the ID parameter in the POST request to /nagiosxi/admin/banner_message-ajaxhelper.php. EPSS estimates a 13.48% chance of exploitation in the next 30 days.

Description

A SQL injection vulnerability in Nagios XI from version 5.11.0 up to and including 5.11.1 allows authenticated attackers to execute arbitrary SQL commands via the ID parameter in the POST request to /nagiosxi/admin/banner_message-ajaxhelper.php

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

13.48%

96.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-89

Affected Software

Vendor	Product	Versions
Nagios	Nagios Xi	>= 5.11.0, < 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-2023-40931?

How severe is CVE-2023-40931?

CVE-2023-40931 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 13.48% probability of exploitation in the next 30 days.

How do I fix CVE-2023-40931?

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-2023-40931?

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

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Source: NVD / NIST