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

Prevent direct access to any script inside vendor/ :

POST /vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php HTTP/1.1 Host: victim.com Content-Type: application/x-www-form-urlencoded

| 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 |

Threat actors utilize automated tools like the Androxgh0st malware or custom Python scripts to find and exploit these endpoints. vendor phpunit phpunit src util php eval-stdin.php cve

eval('?>' . file_get_contents('php://stdin'));

find . -path "*/phpunit/src/Util/PHP/eval-stdin.php"

if you cannot update immediately:

The , targeted by a joint FBI and CISA advisory , has integrated the exploitation of CVE-2017-9841 into its arsenal. This Python-based malware focuses on credential exfiltration, particularly from .env files storing sensitive credentials for cloud services like AWS, Office 365, and Twilio. The malware also builds botnets using exploited systems for reconnaissance and further attacks. This malware exploits both CVE-2017-9841 (PHPUnit) and other critical vulnerabilities like CVE-2021-41773 (Apache HTTP Server).

: It passes that raw input directly into the eval() function, which interprets the string as active PHP code.

: This function executes any string passed to it as PHP code. Prevent direct access to any script inside vendor/

Fortunately, the PHPUnit team has released patches for this vulnerability, which are available in versions 9.5.10 and 8.5.11. To protect your applications, it is essential to update to one of these versions or apply the patches provided by the PHPUnit team.

: The script does not contain any access controls, token validations, or origin verifications.

The string vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php represents one of the most heavily targeted files in web security history. Cataloged as , this critical remote code execution (RCE) vulnerability continues to dominate global malicious threat scanning logs. Despite its age, a lethal combination of unauthenticated access, trivial exploitation, and systemic deployment flaws keeps this flaw highly relevant for modern security teams. Anatomy of the Vulnerability -path "*/phpunit/src/Util/PHP/eval-stdin