Gruyere is a vulnerable application which can be used to learn and understand web vulnerabilities. Detailed documentation is provided on the type of the vulnerabilities present in the application and ways to exploits it.
Update: Jarlsberg is now Gruyere
This codelab shows how web application vulnerabilities can be exploited and how to defend against these attacks. The best way to learn things is by doing, so you’ll get a chance to do some real penetration testing, actually exploiting a real application. Specifically, you’ll learn the following:
- How an application can be attacked using common web security vulnerabilities, like cross-site scripting vulnerabilities (XSS) and cross-site request forgery (XSRF).
- How to find, fix, and avoid these common vulnerabilities and other bugs that have a security impact, such as denial-of-service, information disclosure, or remote code execution.








