The HT Contact Form Widget For Elementor Page Builder & Gutenberg Blocks & Form Builder. plugin for WordPress is vulnerable to arbitrary file moving due to insufficient file path validation in the handle_files_upload() function in all versions up to, and including, 2.2.1. This makes it possible for unauthenticated attackers to move arbitrary files on the server, which can easily lead to remote code execution when the right file is moved (such as wp-config.php).
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.