Several days ago I saw a player votes for the kick
on the server where the vote is prohibited
hacker change byte in memory and can vote (select track)

server must protect this

Quote from denis-takumi :

Several days ago I saw a player votes for the kick
on the server where the vote is prohibited
hacker change byte in memory and can vote (select track)

server must protect this

Replay or it didnt happen.

Maybe you are confused with the guy who falsely obtained admin rights.

MPR attached

Thank you - fixed in 0.6B5