Simple AL Slider <= 1.2.10 - Reflected XSS

Description The plugin 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

PoC

1. Add a new project 2. As an admin, access the URL: https://example.com/wp-admin/admin.php?page=simpleal_slider_show&active;=0&pid;="> 3. See the XSS