Cross-site scripting vulnerability found on Photobucket

Few days back I found a serious  Cross-sie scripting (XSS) Vulnerability on; which  known for its image hosting, video hosting, slideshow creation and photo sharing services.This vulnerability can be used to hijack sessions and malware spreading.Photobucket's global alexa rank is 202 which means millions of people who visit it daily are in risk which makes it a serious issue.