Project Status <= 1.6 - Reflected Cross-Site Scripting (XSS)

The pspin_duplicate_post_save_as_new_post function of the plugin does not sanitise, validate or escape the post GET parameter passed to it before outputting it in an error message when the related post does not exist, leading to a reflected XSS issue

PoC

Open the below URL as any authenticated user https://example.com/wp-admin/admin.php?action=pspin_duplicate_post_save_as_new_post_draft&amp;post;=<script>alert(document.domain)</script>