The WP Shopify WordPress plugin before 1.5.4 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 high privilege users such as admin
Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in Fahad Mahmood WP Shopify allows PHP Local File Inclusion. This issue affects WP Shopify: from n/a through 1.5.3.