Every bug hunter knows this feeling: You're scanning a domain, expecting the usual — a login page, some APIs, maybe a misconfigured header — and then suddenly you stumble onto something that feels like a time machine.

Something from the era of old-school CGI scripts and XAMPP installations. Something that absolutely should NOT be sitting exposed in a modern production environment.

That's exactly what happened when I discovered a fully accessible printenv.pl script on a platform operated by Allcargo Group, a major logistics and infrastructure company.

And this tiny script? It revealed everything.

🔎 The Discovery: A Classic CGI Endpoint in 2025

While testing a domain associated with Allcargo's terminals platform, I noticed a path that looked… nostalgic:

/cgi-bin/printenv.pl

These CGI tools were commonly used decades ago for debugging and server diagnostics.

So I opened the URL.

No login. No challenge. Just instant output — a complete dump of the server's environment variables.

And this wasn't a harmless snippet. It was a full environmental fingerprint of the server itself.

📜 What the Endpoint Revealed

The script exposed a massive amount of sensitive internal data, including:

🔸 1. Internal IP Addresses

Values like:

10.0.0.10
10.0.2.5

These revealed the internal network topology.

🔸 2. Software Versions

Including:

  • Apache 2.4.54
  • OpenSSL 1.1.1p
  • PHP 8.2.0

Perfect for matching against known CVEs.

🔸 3. Complete Server File Paths

Such as:

C:/xampp/...
C:/Windows/System32
C:/xampp/php

This immediately confirmed the server ran a Windows + XAMPP stack — rarely seen in enterprise production systems and often misconfigured.

🔸 4. SSL & Request Metadata

Including:

  • SNI information
  • X-Forwarded-For chain
  • Request protocol details

Useful for request spoofing experiments.

🔸 5. Environment Variables

Some were harmless. Others were concerning.

From system-level variables like COMSPEC and SYSTEMROOT, to PHP runtime settings, to CGI configuration details.