The Customer Reviews for WooCommerce WordPress plugin before 5.17.0 does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.
https://wpscan.com/vulnerability/fdaba4d1-950d-4512-95de-cd43fe9e73e5/