Lua's sandboxes are very lightweight, if the untrusted code could be pure Lua: http://stackoverflow.com/questions/1224708/how-can-i-create-a-secure-lua-sandbox

Lua's sandboxes are very lightweight, if the untrusted code could be pure Lua: http://stackoverflow.com/questions/1224708/how-can-i-create-a-secure-lua-sandbox http://stackoverflow.com/questions/1224708/how-can-i-create-... You can do the same in any interpreted language that allows you to specify the environment to eval calls.