vm2 is an open source vm/sandbox for Node.js. In vm2 prior to version 3.10.2, "Promise.prototype.then" "Promise.prototype.catch" callback sanitization can be bypassed. This allows attackers to escape the sandbox and run arbitrary code. In lib/setup-sandbox.js, the callback function of "localPromise.prototype.then" is sanitized, but "globalPromise.prototype.then" is not sanitized. The return value of async functions is "globalPromise" object. Version 3.10.2 fixes the issue.