The search string targets CVE-2017-9841 , one of the most persistent Remote Code Execution (RCE) flaws in the history of PHP web development. With a CVSS v3 score of 9.8 (Critical) , this security flaw continues to dominate malicious scanning traffic long after its initial discovery.
: The script does not contain any access controls, token validations, or origin verifications.
If you have ever run composer install on a legacy project, pulled a popular CMS like Drupal, WordPress, or Magento, or inherited a decade-old codebase, chances are you have—unknowingly—hosted this backdoor. vendor phpunit phpunit src util php eval-stdin.php cve
Or simply attempt to access the file via a browser or curl .
Alternatively, download the patched version of PHPUnit from the official GitHub repository: The search string targets CVE-2017-9841 , one of
The script uses eval() on raw HTTP POST data, allowing unauthenticated attackers to execute arbitrary PHP code. ⚠️ Affected Versions PHPUnit versions before 4.8.28 PHPUnit versions 5.x before 5.6.3 🚀 Exploitation Method
Critical (CVSS 9.8) Affected versions: PHPUnit ≤ 4.8.28 and ≤ 5.6.3 Fixed in: PHPUnit 4.8.28, 5.6.3, and later If you have ever run composer install on
It looks like you’re referencing a specific command and a CVE related to PHPUnit, particularly the eval-stdin.php script.
curl -d "<?php system('id'); ?>" https://target.com/vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php
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