After a bit of a delay in programming & testing, MCCodes have finally released the v2.0.4 security & bugfix patch for MCCodes v2 users.
Also released is a security document, which allows users to fix the security problems which were fixed in 2.0.4 in their own games if they are heavily modified or not v2.
The changelog is attached to this post. The security advisory is available to ALL paying customers in their customer area, underneath the engine license section.
Please report bugs through our bug tracker, or here if you prefer (though reporting them to our official bug tracker is much better for us)
If you want to just place the 2.0.4 files over your (UNMODIFIED) 2.0.3 ones you can do so and have it function correctly by executing the following SQL queries:
This is highly unrecommended for all but those who are just starting out on their game, since you will lose all your mods.