Order Export & Order Import for WooCommerce < 2.4.4 - Shop Manager+ Arbitrary File Upload

Description

The plugin is vulnerable to arbitrary file uploads due to missing file type validation in the upload_import_file function in all versions up to, and including, 2.4.3. This makes it possible for authenticated attackers, with shop manager-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.