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

Even if developers intended for /vendor to be private, a misconfigured Apache ( .htaccess ) or Nginx config might expose it. How to Check and Fix 1. Check for the Vulnerability

for suspicious POST requests:

Here are the details regarding this issue:

| Item | Value | |------|-------| | Vulnerability | Remote Code Execution (RCE) | | CVE | CVE-2017-9841 | | Affected File | vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php | | Attack Vector | HTTP POST to that file with PHP code in body | | Patch | Remove PHPUnit from production / upgrade to PHPUnit ≥ 7.0 | | Detection | grep -r "eval-stdin" /var/www / web logs for POST to that URI | vendor phpunit phpunit src util php eval-stdin.php cve

If you manage any PHP web application, take 10 minutes today to check whether the file /vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php is publicly accessible. If it is, remediate it immediately. The difference between a secure server and a compromised one often comes down to a single forgotten file.

This is the primary vulnerability associated with that file path.

The flaw is located specifically in vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php . The source file originally contained a single line designed to facilitate internal framework testing: eval('?>' . file_get_contents('php://input')); Use code with caution. Even if developers intended for /vendor to be

This comprehensive analysis breaks down how the vulnerability works, why a flaw from nearly a decade ago is still a major threat, and how to safeguard your applications. Anatomy of the Vulnerability

This is not a theoretical vulnerability—it has been actively exploited in the wild for years.

Nine years after its public disclosure, CVE-2017-9841 remains one of the most widely exploited PHP vulnerabilities. According to threat intelligence firm VulnCheck, between April 11 and May 11, 2026, their global canary network detected against this vulnerability—with 36,543 attempts occurring in the last 10 days alone. If it is, remediate it immediately

This is only exploitable if the /vendor directory is accessible from the web (a common misconfiguration in production environments). Affected Versions Web Attack: PHPUnit RCE CVE-2017-9841 - Broadcom Inc.

The vulnerability stems from the eval-stdin.php file, which was designed to facilitate unit testing by executing PHP code provided via standard input. ludy-dev/PHPUnit_eval-stdin_RCE - GitHub