Due to the insufficient sanitization of the file argument in the launchEditor, an attacker can execute arbitrary commands on Windows by supplying a filename that contains special characters.
Impact
If the following conditions are met, an attacker can execute arbitrary commands on the computer that is using the launch-editor:
An attacker can place a file with the malicious filename
An attacker can call the launchEditor method with the file argument controlled
The launch-editor package is running on Windows
For example, some development server using this package satisfy these conditions, as a malicious website might be able to force the downloading of a file and the path of that file is predictable.
Patch
This issue has been fixed in the launch-editor version 2.9.0 (commit).