Index Of Vendor Phpunit Phpunit Src Util Php Eval-stdin.php -

The issue resides in how PHPUnit—a popular testing framework for PHP—handles input in its utility files. In older versions, the eval-stdin.php file contained code designed to execute raw data received via standard input.

Run Composer with the --no-dev flag to exclude testing tools:

Thousands of servers have been compromised this way, leading to:

composer install --no-dev --no-scripts

After cleanup, test again with curl to verify the script no longer responds.

Attackers use search operators to find open directories. A query like intitle:"Index of /vendor/phpunit" targets servers with directory listing enabled. 2. Verification

The danger of eval-stdin.php is so well-known that it has been assigned . The description: "PHPUnit allows remote attackers to execute arbitrary PHP code via HTTP POST data beginning with a <?php tag, as demonstrated by an attack on a site with an exposed /vendor folder." index of vendor phpunit phpunit src util php eval-stdin.php

find /path/to/webroot -name "eval-stdin.php"

The vulnerability was officially assigned . It affects PHPUnit versions:

The danger stems from two factors:

However, because the internet is vast, and legacy codebases rarely die, these open directory indexes still exist.

location ~ /vendor deny all; return 404;