mail/compose/ComposeActivity.java in AOSP Mail in Android 4.x before 4.4.4 5.0.x before 5.0.2 5.1.x before 5.1.1 and 6.x before 2016-04-01 supports file:///data attachments which allows attackers to obtain sensitive information via a crafted application aka internal bugs 7154234 and 26989185.