Is it possible to conduct sql-inj or some other not 'good' dirty trick, having found something like this?

Question

SQL

Occasionally I check sites for sql injections, out of curiosity!
And now, for the first time, a site was found with an error thrown out on the screen :)
http://cp.ketrawars.ru/'login
And here is the thrown error:

ErrorException [ Fatal Error ]: Call to a member function render() on a non-object | 
APPPATH/system/classes/Kohana/Controller/Template.php:44

It is very interesting how this "exploit?" can be used?
And be so kind as to throw something to read on this topic (since the question has appeared).
THANK!

Answer 1

This bug doesn't affect the database, and you won't be able to call the code on the server, so there's not much you can do here.