Unrestricted file upload vulnerability in Kwalbum 2.0.4 2.0.2 and earlier when PICS_PATH is located in the web root allows remote authenticated users with upload capability to execute arbitrary code by uploading a file with an executable extension then accessing it via a direct request to the file under items/ related to the ReplaceBadFilenameChars function in include/ItemAdder.php. NOTE: some of these details are obtained from third party information.