That's not to say that Node doesn't need to fix this (and it seems like Bert from the core team is) but it's not a Node specific issue.
Thus you could say that V8 is "secure" on the client side but "insecure" on the server side because of the different risk assessments. It is poor security practice to take software designed for one security environment and assume it will be secure in other environments. If Node.js wants to have a secure system they will need to take these security issues into consideration and harden their system appropriately.
(The headline is misleading because the issue affects several major language runtimes, V8 included – yet only Node.js is mentioned.)
There is even a cluster module built in now to remove the need for an extra external tool to manage the processes: http://nodejs.org/docs/latest/api/cluster.html (there are more fuller featured options available as extra modules, I'm not sure how they compare efficiency-wise with the in-built one). I'm guessing this isn't the way to go if the processes need to communicate, but I've not looked into it overly deeply yet (my experiments with node not having grown to the point of needing to take advantage of more than one core).