An issue was discovered in Responsive Filemanager through 9.14.0. In the ajaxcalls.php file in the saveimg action in the name parameter, there is no validation of what kind of extension is sent. This makes it possible to execute PHP code if a legitimate JPEG image contains this code in the EXIF data, and the .php extension is used in the name parameter. (A potential fast patch is to disable the save_img action in the config file.)