Command Injection in Nagios XI - CVE-2026-2043
Published: February 13, 2026
Vulnerability identifier: #VU122830
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-2043
CWE-ID: CWE-77
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: nagios.org
Affected software:
Nagios XI
Nagios XI
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary commands on the system.
The vulnerability exists due to insufficient input validation within the esensors_websensor_configwizard_func method. A remote administrator can pass specially crafted data to the application and execute arbitrary commands.
How to mitigate CVE-2026-2043
Install updates from vendor's website.