We have upgraded to the latest Node.js version 0.10.21. The new version is also available for your apps and can be selected when a new VM is provisioned.
Fig 1: Node.js Version 0.10
To switch an existing app to use the new Node.js version, just make an environment entry "node_version=0.10".
Fig 2: Switch Node.js version for an existing app
The installed versions 0.8.26 and 0.10.21 contain a security fix for the http server implementation. Please restart your apps as soon as possible to activate the fix. The Node.js team will soon release details about the vulnerability.