Popup Anything < 2.1.7 - Reflected Cross-Site Scripting

The plugin does not sanitise and escape a parameter before outputting it back in a frontend page, leading to a Reflected Cross-Site Scripting On a post/page where the paocdetails display="keyxxx" shortcode is embed, append the following payload: ?xxx=11111%3Cscript%3Ealert/XSS/%3C/script%3E e.g:...