Topic: 0.6.3 released - security fix
As a result of a recently reported security vulnerability in the server, this release contains little updates. In particular it's only the following changes:
Fix the above-mentioned security vulnerability (Memory reads, Segmentation Fault) in all 0.6.x servers.
Fix server crash in the console code.
Fix master server lookup for servers.
Fix scripts/make_release.py script.
Fix client crash when opening a map with an invalid version.
As a result, server owners are urged to upgrade ASAP, you're running an exploitable server right now.
Client updates however, are not as urgent as the server updates, because the only fix is an editor crash.