Update the WordPress Welcart e-Commerce plugin to the latest available version (at least 2.7.8).
Nguyen Anh Tien discovered and reported this Directory Traversal vulnerability in WordPress Welcart e-Commerce Plugin. This could allow a malicious actor to see all files in a given directory or determine if certain files/directories exist in given folder. This can be used to exploit other weaknesses in the system This vulnerability has been fixed in version 2.7.8.