Description
An issue was discovered in Nagios XI 5.8.5. In the Custom Includes section of the Admin panel, an administrator can upload files with arbitrary extensions as long as the MIME type corresponds to an image. Therefore it is possible to upload a crafted PHP script to achieve remote command execution.
References (3)
Core 3
Core References
Release Notes, Vendor Advisory x_refsource_misc
https://assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXT
Not Applicable x_refsource_misc
https://synacktiv.com
Exploit, Third Party Advisory x_refsource_misc
https://www.synacktiv.com/sites/default/files/2021-10/Nagios_XI_multiple_vulnerabilities_0.pdf
Scores
CVSS v3
7.2
EPSS
0.6721
EPSS Percentile
98.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-434
Status
published
Products (1)
nagios/nagios_xi
5.8.5
Published
Oct 26, 2021
Tracked Since
Feb 18, 2026