1. A method comprising: receiving a request to create an isolated execution environment within a host environment controlled by an operating system; creating, by a processing device, a process server to support communications with processes executing in the isolated execution environment; assigning a security context to the process server; creating, by the processing device, the isolated execution environment associated with the process server and controlled by the operating system, wherein the processes executing in the isolated execution environment execute at the security context; initiating, by the processing device, a process in the isolated execution environment; and assigning, by the processing device, a security label to the process, wherein the security label is associated with the security context.