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

The server has just executed the id command. The attacker now has Remote Code Execution (RCE).

In a web environment, php://stdin corresponds to the HTTP POST request body. Consequently, any HTTP POST request sent to this file — with a body beginning with <?php — would be blindly executed by the server. vendor phpunit phpunit src util php eval-stdin.php exploit

Many modern web developers wonder why a 2017 vulnerability still surfaces constantly in server access logs. The persistence of CVE-2017-9841 boils down to three factors: The server has just executed the id command

The vulnerability resides specifically in the path: vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php (or Util/PHP/eval-stdin.php depending on the version layout). vendor phpunit phpunit src util php eval-stdin.php exploit

Using curl , an attacker can verify the vulnerability by causing the server to execute the phpinfo() function:

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