YUI 2.8.1以前の YUI,swfにセキュリティの問題

YUI 2.8.2 Security Bulletin

If your site loads YUI 2 from Yahoo's CDN (yui.yahooapis.com) or from Google's CDN (ajax.googleapis.com), and the files are not hosted on your own domain, you are not affected. YUI 3 is not affected by this issue.

YAHOOやGoogleのCDNを使っている場合は問題ないらしい。（なんで？CDN上のSWFは差し替えたのかな？）