An authenticated arbitrary file upload vulnerability in the /uploads/ endpoint of CMS Made Simple Foundation File Manager v2.2.22 allows attackers with Administrator privileges to execute arbitrary code via uploading a crafted PHP file.
A vulnerability, which was classified as problematic, has been found in CMS Made Simple 2.2.21. This issue affects some unknown processing of the component Design Manager Module. The manipulation of the argument Description leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.