Checkout Field Editor for WooCommerce (Pro) <= 3.7.7 - Authenticated (Subscriber+) Path Traversal to Arbitrary File Read via 'thwcfe_legacy_file' Parameter

The Checkout Field Editor for WooCommerce (Pro) plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 3.7.7 via the 'thwcfe_legacy_file' parameter. 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.