Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
HongCMS 3.0.0 allows arbitrary file deletion via a ../ in the file parameter to admin/index.php/database/ajax?action=delete, a similar issue to CVE-2018-16774. (If the attacker deletes config.php and visits install/index.php, they can reinstall the product.)
CWE-22 - Path Traversal
Path traversal (or directory traversal), is a vulnerability that allows malicious users to traverse the server's root directory, gaining access to arbitrary files and folders such as application code & data, back-end credentials, and sensitive operating system files. In the worst-case scenario, an attacker could potentially execute arbitrary files on the server, resulting in a denial of service attack. Such an exploit may severely impact the integrity, confidentiality, and availability of an application.