Vendor Phpunit Phpunit Src Util Php Eval-stdin.php Exploit =link= Jun 2026

Check for unexpected new files in:

The script reads anything sent to STDIN (standard input) and passes it directly to eval() . In a CLI (command-line interface) environment, this is safe because only authorized users have shell access. However, when this file is placed in a web-accessible directory, an attacker can use the php://input wrapper or a POST request body to supply the STDIN data. vendor phpunit phpunit src util php eval-stdin.php exploit

Output: uid=33(www-data) gid=33(www-data) groups=33(www-data) Check for unexpected new files in: The script

The exploit takes advantage of how the eval-stdin.php file processes input. This file is designed to read PHP code from standard input and evaluate it. While this functionality sounds benign and potentially useful for testing purposes, when exposed improperly, it can become a significant security risk. An attacker can exploit this by sending malicious PHP code to the server, which then executes the code. An attacker can exploit this by sending malicious

This code generates malicious input that, when provided to the eval-stdin.php script, executes the ls -l command. This example illustrates the potential for code injection and RCE.