1337day had a reflective XSS bug and a HTML injection vulnerability. Anyhow according to my research done this was a browser dependent XSS meaning this could be only exploited in the Microsoft Internet Explorer browsers only. By the way I also got mentioned in a blog : http://thehackersbay.org/2013/12/1337day-a-popular-exploit-database-has-been-affected-by-a-xss/
Reward was 10 gold. Thanks to r0073r 🙂