Jason Gilmore has posted an article to the Easy Laravel Book site with a bit more detail about how the framework prevents some common security issues including SQL injection and cross-site request forgery.
A reader recently e-mailed me and asked about Laravel 5’s native security features. While I talk about various security-related matters throughout the book, this information isn’t consolidated into any particular chapter and so I thought it would be useful to do so in a single blog post. Laravel helps to secure your web application by protecting against three serious security risks: SQL injection, cross-site request forgery, and cross-site scripting.
He goes through each of the types and talks about the built-in functionality Laravel includes to protect against each one. A bit of code is tossed in when needed to help clarify the point too. Fortunately for the user, a good bit of the technical pieces of these protections are behind the scenes and don't need much effort to use.