Terrain Glitch
One of the only known glitches that is bannable in-game allows you to move a terrain-locked part of the game anywhere you want. This glitch is considered game-breaking because it is simply capable of breaking the whole planet itself. However, some of the terrain glitches can be either client-side or server-side.
Gattling Laser Glitch
There is a glitch that allows you to grab the Gatling Laser from the vehicle without having to sit on it. Currently, there is only one method working to obtain it; the other two were patched.