I'm also sure that people are working hard to fix these recent security issues and perfs issues.
But as a non-Rails dev I can tell you one thing: with all the attention that Rails got lately I'm sure I'll never be learning Ruby / Rails.
I'm into Clojure right now. Next target is Go.
Sadly all these Rails exploits do have a negative effect for Rails: I'm not saying this to criticize Rails. I'm saying this because I'm honestly 100% sure I'll never ever be doing anything serious with Rails and I know I'm not the only one in this case.
So, Rails devs, fix this and fix this rather sooner than later because every exploit is missed opportunities.