Index Of Vendor Phpunit Phpunit Src Util Php Evalstdinphp Work Site

eval-stdin.php is a small utility script that reads raw input from stdin and evaluates it as PHP code using eval().

Contents of the file (historically):

#!/usr/bin/env php
<?php
eval(file_get_contents('php://stdin'));

Search for the file in web root:

find /var/www/html -name "eval-stdin.php"

If found outside vendor (e.g., moved to web/), investigate immediately. eval-stdin

The problem arises when the vendor/ folder is placed inside the document root of a web server (e.g., /var/www/html/vendor/) and the server allows direct execution of PHP files.

If an attacker finds:

https://example.com/vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php

They can send arbitrary PHP code via POST or query parameters if the script is misconfigured to read from php://input instead of php://stdin (some outdated forks do this). Search for the file in web root: find

If your web server configuration allows directory listing (e.g., Options +Indexes in Apache), and the vendor folder is inside your web root (e.g., /var/www/html/vendor), an attacker can simply visit:

https://yoursite.com/vendor/phpunit/phpunit/src/Util/PHP/

The server will display an "Index of" page listing every file, including eval-stdin.php. If found outside vendor (e

![Simulated Index of listing showing eval-stdin.php]

Once they see the file exists, they can exploit it immediately.

rm -f vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php

Better yet, never deploy the vendor/ directory with development dependencies. Use --no-dev when installing via Composer:

composer install --no-dev --optimize-autoloader