XSS in Google 500 Error page
Due to highly poor internet conditions in my university, we often encounter google error pages. But this happened during my winter break when googling some stuff, I was redirected to a Google 500 error page. What caught my attention was that arguments were present there but the page was a html page. So I thought of viewing the source and I saw that, just some regex matching using javascript was done to extract those parameters. The parameters were being passed as a link in the page. I tried XSS and it worked out. The awkward thing was that they never tried to filter the url, when the request was being sent to their server. Then I reported it to Google. May be they were in their winter break, so they took some time to respond. But atlast they responded and google rewarded me with $1337.