Admidio has IDOR in `documents-files.php` `mode=move_save` that lets any folder-uploader exfiltrate files from private folders

Summary modules/documents-files.php gates state-changing modes by checking that the actor has hasUploadRight on the URL parameter folderuuid. The movesave handler then operates on a separate URL parameter fileuuid and calls File::moveToFolder$destFolderUUID. File::moveToFolder checks the upload...