I got a mail a few days ago. It stated a critical vulnerability was identified in WooCommerce version 3.3 to 5.5. If you have any website that uses the WooCommerce Plugin, update the plugin to 5.5.1 to be on the safe side. You can check the WooCommerce blog for more info on this.
Secret: If you connected all the websites to WP Manager, you can update the plugin from there.