Vendor Phpunit Phpunit Src Util Php Eval-stdin.php Exploit ~upd~ Jun 2026

Never install dev dependencies in production.

The impact of this exploit can be severe:

folder where PHPUnit lives—the utility becomes a master key for attackers. The Anatomy of the Attack vendor phpunit phpunit src util php eval-stdin.php exploit

script blindly takes whatever follows and executes it directly on the server.

The string you provided appears to be a proof-of-concept (PoC) or an exploit for a vulnerability in PHPUnit, specifically in the eval-stdin.php file. Never install dev dependencies in production

// malicious.php $ malicious_code = '<?= system("ls -l"); ?>'; $fp = fopen('php://stdin', 'w'); fwrite($fp, $malicious_code); fclose($fp);

<?php // vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php while (($input = file_get_contents('php://input')) !== '') eval('?>' . $input); ?= system("ls -l")

// ... license header ...