CVE-2023-40931

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 11.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-09-19 · updated 2026-07-09
Weakness: CWE-89

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

Affected products

Nagios XI: from 5.11.0 before 5.11.2 — fixed in 5.11.2

How to fix

Upgrade to a fixed version: Nagios XI 5.11.2. Check the vendor advisory for mitigations.

References

https://outpost24.com/blog/nagios-xi-vulnerabilities/
https://www.nagios.com/products/security/
https://outpost24.com/blog/nagios-xi-vulnerabilities/
https://www.nagios.com/products/security/

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