Directory traversal vulnerability in lib/filemanager/imagemanager/images.php in CMS Made Simple (CMSMS) before 1.11.2.1 allows remote authenticated administrators to delete arbitrary files via a .. (dot dot) in the deld parameter. NOTE: this can be leveraged using CSRF (CVE-2012-5450) to allow remote attackers to delete arbitrary files.
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.