You can verify your exposure by checking your server logs or attempting to access the file safely.
: If you are using an older version, update to at least 4.8.28 or 5.6.3 via Composer .
The Danger: Remote Code Execution (RCE) vulnerability. If accessible via web, attackers can send arbitrary PHP code to execute. You can verify your exposure by checking your
You can check if your server is vulnerable by attempting to access the file directly.
If your vendor folder is publicly accessible on your web server, a remote attacker can send a POST request to this file containing malicious PHP code. This allows them to execute arbitrary commands on your server, potentially leading to a full system compromise. If accessible via web, attackers can send arbitrary
public function testEvalStdin()
is a popular unit testing framework for PHP. The evalstdin.php script is a utility included within PHPUnit's source code ( src/Util/PHP/evalstdin.php ). Its designed purpose is to allow the PHPUnit process to receive PHP code via stdin (standard input) and execute it, which is useful in certain types of automated testing scenarios [1]. Why is this a Security Risk? This allows them to execute arbitrary commands on
Changes:
eval‑stdin.php is not a vulnerability in PHPUnit itself. It is a legitimate development tool that becomes a critical security risk when deployed to a public‑facing environment – a classic case of leaving test artifacts in production.
: Run system-level commands through PHP to take full control of the server.
curl -d "<?php system('id'); ?>" https://victim.com/vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php
