When a friend of yours allows an application to access their information, that application may also access any information about you that your friend can already see,
For example, if an application creates a slideshow of your photo albums, and a certain album is set to “Only My Friends”, it may only display that slideshow to your friends.
You can use the controls on application privacy page to limit what types of information your friends can see about you through applications.
You can reach above page by moving to Setting > Privacy setting > Application and from application setting you can control anything you want.
