加急通道：https://developer.apple.com/appstore/contact/appreviewteam/index.html
审核加急最好别常用，这个没有准确的说法，开发者们说一年两三次机会，appstore上线过app，加急成功的几率会大一些。

加急时的理由一般可以写：

We found a serious security problem, Our application users  to share the photo which find in our APP, maybe lead them the Social network account not safe. In the new version we fix this serious problem.So we need a fast review, to ensure the security of user information. Please help us, thank you very much.

一般两个工作日内就可以通过。审核的时候最好把发现里的东西都关了，然后首页信息流和本地圈不要有裸露、血腥暴力等类似内容。