Improper Privilege Management Affecting shelljs Open this link in a new tab package, versions <0.8.5

  • Exploit Maturity

    Proof of concept

  • Attack Complexity


  • Confidentiality


  • Availability


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  • snyk-id


  • published

    12 Jan 2022

  • disclosed

    11 Jan 2022

  • credit


How to fix?

Upgrade shelljs to version 0.8.5 or higher.


shelljs is a wrapper for the Unix shell commands for Node.js.

Affected versions of this package are vulnerable to Improper Privilege Management. When ShellJS is used to create shell scripts which may be running as root, users with low-level privileges on the system can leak sensitive information such as passwords (depending on implementation) from the standard output of the privileged process OR shutdown privileged ShellJS processes via the exec function when triggering EACCESS errors.

Note: Thi only impacts the synchronous version of shell.exec().