The wrapper php://input reads raw data directly from the body of an HTTP request. When the server processes an HTTP POST request targeting this file, the eval() function executes whatever code is sent in the payload without any authentication or access control. Anatomy of an Attack: How the Exploit Works
. This vulnerability allows an attacker to execute arbitrary PHP code by sending an HTTP POST request to the eval-stdin.php
The original, flawed codebase contained this exact line of code: eval('?>' . file_get_contents('php://input')); Use code with caution. Why it is Dangerous
: The script reads the raw POST body of a request. The wrapper php://input reads raw data directly from
| Keyword Part | Meaning | |--------------|---------| | index of | Exposed directory listing (misconfiguration) | | vendor/phpunit/phpunit/src/Util/ | Path to PHPUnit’s internal utilities | | eval-stdin.php | A dangerous script that evaluates arbitrary PHP code | | work | How to use it legitimately or how to exploit/protect it |
The following PHPUnit versions are vulnerable:
If you truly need eval-stdin.php for advanced testing, follow these rules: This vulnerability allows an attacker to execute arbitrary
The path you provided, vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php , is a well-known vulnerability tracked as . It allows remote attackers to execute arbitrary code on your server by sending a specific HTTP POST request.
eval('?>'.file_get_contents('php://input'));
Stay secure, and always keep your vendor folders out of the public eye. | Keyword Part | Meaning | |--------------|---------| |
If the server misinterprets php://stdin (in a CGI/FastCGI setup), it may read the POST body — leading to .
Let's structure the article:
// Optionally print result or just exit success exit(0);