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Improper Control of Generation of Code ('Code Injection')


Severity High
Score 10/10


The package vm2 is an advanced vm/sandbox for "Node.js". The library contains critical security issues and should not be used for production. The maintenance of the project has been discontinued. In vm2 "Promise" handler sanitization can be bypassed with "@@species" accessor property allowing attackers to escape the sandbox and run arbitrary code. Remote Code Execution, assuming the attacker has arbitrary code execution primitive inside the context of vm2 sandbox.

  • LOW
  • HIGH
  • NONE
  • NONE
  • HIGH
  • HIGH

CWE-94 - Code Injection

Code injection is a type of vulnerability that allows an attacker to execute arbitrary code. This vulnerability fully compromises the machine and can cause a wide variety of security issues, such as unauthorized access to sensitive information, manipulation of data, denial of service attacks etc. Code injection is different from command injection in the fact that it is limited by the functionality of the injected language (e.g. PHP), as opposed to command injection, which leverages existing code to execute commands, usually within the context of a shell.

Advisory Timeline

  • Published