The Yahoo! Japan Yahoo! Browser application 1.2.0 and earlier for Android does not properly implement the WebView class, which allows remote attackers to obtain sensitive information via a crafted application.
https://play.google.com/store/apps/details?id=jp.co.yahoo.android.ybrowser
http://www.securityfocus.com/bid/54488
http://secunia.com/advisories/49905