Extra Product Options for WooCommerce <= 3.0.3 - Authenticated (Shop manager+) Stored Cross-Site Scripting via plugin settings

Description The Extra Product Options for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin settings in versions up to, and including, 3.0.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with shop manager-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.