Lab: Stored XSS into anchor
href attribute with double quotes HTML-encoded
This lab contains a stored cross-site scripting vulnerability in the comment functionality. To solve this lab, submit a comment that calls the
alert function when the comment author name is clicked.
- Post a comment with a random alphanumeric string in the "Website" input, then use Burp Suite to intercept the request and send it to Burp Repeater.
- Make a second request in the browser to view the post and use Burp Suite to intercept the request and send it to Burp Repeater.
Observe that the random string in the second Repeater tab has been reflected inside an anchor
- Verify the technique worked by right-clicking, selecting "Copy URL", and pasting the URL in the browser. Clicking the name above your comment should trigger an alert.