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code via POST or query parameters if the script is misconfigured to read from php://input instead of php://stdin (some outdated forks do this).
If you see index of vendor phpunit phpunit src util php evalstdinphp in your server logs or search queries targeting your domain, treat it as an active probe from attackers or security scanners.
In a controlled CLI environment, this is because only authorized users can pass code to STDIN. They can send arbitrary PHP code via POST
folder—which should be private—becomes public. An attacker can then send a simple POST request to this URL:
This vulnerability is rarely a fault of the production code itself, but rather a failure in the . The vendor directory, managed by PHP's package manager Composer, is intended for development and dependency management. vulhub/phpunit/CVE-2017-9841/README.md at master - GitHub folder—which should be private—becomes public
https://example.com/vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php
PHPUnit is a programmer-oriented testing framework for PHP. The vulnerability resides in a specific utility script, eval-stdin.php , designed to facilitate internal testing processes by executing PHP code passed via standard input. vulhub/phpunit/CVE-2017-9841/README
This is often unintentional and poses a serious security risk because it reveals the internal structure of an application and exposes files that were never meant to be accessed directly from the web.
This article will break down what this path means, why attackers want it, how the "index of" listing exacerbates the risk, and exactly how to fix it.
From a terminal, you would normally run:
If you own the server:
/android-app