Confirming File upload directory traversal without knowing upload path or being able to retrieve the uploaded file?

I am faced with a file upload functionality. We can upload docs and png’s but cannot view them.
I have tested for several things so far and now would like to test for directory traversal via file name.
I.e if can I upload / replace files i… Continue reading Confirming File upload directory traversal without knowing upload path or being able to retrieve the uploaded file?