published October 26, 2021
NVD has not assigned a CVSS score to this record. It sits in the 99.2th percentile for exploit probability.
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.