It appears as if Codehub.go is unsolvable, the 2nd test case has no way of passing even with the security issues fixed.
Thanks Andrej. Will check it.
server tests looks okay. @andrej.kikelj can you please confirm you have your latest code pushed?
Without disclosing too much about the solution, from what I can see the security issue has not been addressed.
Feel free to DM me.