The script reads from STDIN , evaluates the string as PHP code, and outputs the result.
You should configure your web server (Nginx or Apache) to deny access to the entire vendor directory. location /vendor/ deny all; return 404; Use code with caution. Apache .htaccess :
From there, they can:
$ echo "<?php echo 'Hello, World!';" | php vendor/phpunit/phpunit/src/util/php/evalStdin.php
The directory‑listing page that greets you when you stumble across /vendor/phpunit/phpunit/src/Util/PHP/ is not just a developer's oversight. It is a gaping security hole that has haunted PHP applications for years. In this article, we’ll dissect what this path means, why it appears in web‑accessible index of listings, and how the seemingly innocent eval‑stdin.php file inside it can lead to complete server compromise. index of vendor phpunit phpunit src util php evalstdinphp
If you are worried that your project is vulnerable, I can help you check your current PHPUnit version or help you configure your Nginx/Apache config to protect your /vendor folder. Let me know which you prefer!
Your action plan:
Ensure autoindex is turned off inside your server block: autoindex off; Use code with caution. 5. Block Access to the Vendor Directory