Forum Thread: How to Report Web Browser Vulnerability?

I would imagine that you go ahead and write a summary of what you found, then list the procedures for finding the vulnerability, show changes to the browser code that were caused by it, etc

I briefly read "A Bug Hunter's Diary" which explained some stuff about bug hunting. I had to lay it down though because I was unfamiliar with a lot of the low-level stuff being used. However you outta take a look at it if you want a really detailed look into reporting vulnerabilities.