Possible security issue

I ran your plugin via the https://www.pluginvulnerabilities.com/plugin-security-checker/ and it found:

Possible Issue Detected in Product Blocks for WooCommerce:

This plugin is extracting potentially untrusted user input from shortcode attributes. The documentation of PHP warns against doing extraction of untrusted user input because of the security risk involved in that. Its usage is also officially discouraged by the coding standards for WordPress.

Just wondering, I even tried to directly get in touch via your support but it seemed impossible, not the best for possible security disclosures.