Cross-site request forgery (CSRF) vulnerability in lib/filemanager/imagemanager/images.php in CMS Made Simple (CMSMS) 1.11.2 and earlier allows remote attackers to hijack the authentication of administrators for requests that delete arbitrary files via the deld parameter.
The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.