Rails 3 Csrf Patcher

There are many other possibilities, like using a <script> tag to make a cross-site request to a URL with a JSONP or JavaScript response. The response is executable code that the attacker can find a way to run, possibly extracting sensitive data. To protect against this data leakage, we disallow cross-site <script> tags. Only Ajax requests may have JavaScript responses since XmlHttpRequest is subject to the browser Same-Origin policy - meaning only your site can initiate the request.

So, this gem just extend cross-site request forgery (CSRF) protection to GET requests with JavaScript responses, protecting apps from cross-origin <script> tags.

I've took all the code from here rails/rails#13345

Add this line to your application's Gemfile:

gem 'rails3_csrf_patcher'

And then execute:

$ bundle

Or install it yourself as:

$ gem install rails3_csrf_patcher

1. Fork it ( https://github.com/[my-github-username]/rails3_csrf_patcher/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request