serve-static serves static files. serve-static passes untrusted user input - even after sanitizing it - to redirect() may execute untrusted code. This issue is patched in serve-static 1.16.0.

Open redirect vulnerability in the serve-static plugin before 1.7.2 for Node.js, when mounted at the root, allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a // (slash slash) followed by a domain in the PATH_INFO to the default URI.