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Phusion Passenger 4.0.2 released

By Hongli Lai on May 7th, 2013

Phusion Passenger is software that deploys Ruby and Python web apps, by integrating into Apache and Nginx and turning them into a fully-featured application server. It is very fast, stable and robust and thus used by the likes of New York Times, AirBnB, Symantec, Pixar, etc. It comes with many features that makes your life easier and your application perform better.

We are releasing an emergency release in response to a recently discovered remote code execution vulnerability in Nginx (CVE-2013-2028). Many versions of Nginx 1.3, as well as Nginx 1.4.0, are affected. Phusion Passenger 4.0.2 installs Nginx 1.4.1 by default. There are no other code changes.

Installing 4.0.2

Quick install/upgrade

Phusion Passenger Enterprise users can download the Enterprise version of 4.0.2 from the Customer Area.

Open source users can install the open source version of 4.0.2 with the following commands:

gem install passenger

You can also download the tarball at Google Code. We strongly encourage you to cryptographically verify files after downloading them.

In-depth instructions

In-depth installation and upgrade instructions can be found in the Installation section of the documentation. The documentation has been updated to cover 4.0 changes, including Enterprise features. You can view them online here:


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