Path traversal by drive name in Windows environment

Summary

A vulnerability has been identified in Node.js, specifically affecting the handling of drive names in the Windows environment. Certain Node.js functions do not treat drive names as special on Windows. As a result, although Node.js assumes a relative path, it actually refers to the root directory.

On Windows, a path that does not start with the file separator is treated as relative to the current directory.

This vulnerability affects Windows users of path.join API.