The W2S – Migrate WooCommerce to Shopify plugin for WordPress is vulnerable to Arbitrary File Read in all versions up to, and including, 1.2.1 via the 'viw2s_view_log' AJAX action. This makes it possible for authenticated attackers, with Subscriber-level access and above, to read the contents of arbitrary files on the server, which can contain sensitive information.
The product allows user input to control or influence paths or file names that are used in filesystem operations.