Take the Semmle CTF challenges

Do you want to challenge your vulnerability hunting skills? We created these CTF challenges to allow you to do exactly that, while helping you to quickly learn Semmle QL:


If you want to learn more about writing QL before getting started with these CTF challenges, you may find the following articles and documents useful:

Getting Help

If you find yourself stuck writing QL or on any part of the CTF and would like some help, there are a few different places you can go:

Get started