Vendor Phpunit Phpunit Src Util Php Eval-stdin.php Cve May 2026

The query refers to CVE-2017-9841, a critical remote code execution (RCE) vulnerability in PHPUnit, a popular testing framework for PHP. Core Vulnerability Details

Conclusion: A Cautionary Tale of Two Lines

The file vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php is a perfect storm: a unit testing utility, a missing --no-dev flag, and a web-accessible vendor directory. CVE-2017-9841 turned two lines of code into a universal RCE gadget for hundreds of thousands of applications. vendor phpunit phpunit src util php eval-stdin.php cve

https://target.com/vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php

An attacker can send:

Obtaining the Patch

• Delete vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php from deployed artifacts.
• If you deploy via Composer, add a post-install/remove script to delete the path or exclude dev dependencies from production installs.

2. Practical impact