XSS on added name album on videos.

Hi Steps to reproduce: First go to : https://vk.com/video Next click on Add a Video After add a video from youtube and on title Field Insert TEST XSS And click save. Next after this go to https://vk.com/video again and you will see video with the name TEST XSS Click above TEST XSS and you will for https://vk.com/video?z=video307088553_171482428%2Falbum307088553 Now scroll and you will see word : Added with a right , put mouse above this and create album In folder name field insert this xss payload: "><img src=x onerror=prompt(1)> And click save. Now video will be added to this album Now go with the mouse above added word and click on added word. And xss will be executed. Ty :) Works on google chrome : 43.0.2357.81 m