The Product list Widget for Woocommerce WordPress plugin through 1.0 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against both unauthenticated and authenticated users (such as high privilege one like admin).
https://wpscan.com/vulnerability/d7f2c1c1-75b7-4aec-8574-f38d506d064a