The file path vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php is central to a well-known security vulnerability, CVE-2017-9841, which allows Remote Code Execution (RCE).
vendor/ directory inside the web root (bad practice)Example attack (if file is web-accessible): Has its vendor/ directory inside the web root
Vulnerable Mechanism: The script contained code similar to eval('?>' . file_get_contents('php://input'));. The php://input stream reads the raw data from a request body. When combined with eval(), this creates a direct path for an attacker to send a malicious PHP script via an HTTP POST request and have the server execute it immediately. Has its vendor/ directory inside the web root
Attackers use Google dorks like:
intitle:"index of" "eval-stdin.php"
to find vulnerable sites. Has its vendor/ directory inside the web root
Options +Indexes (Apache) or autoindex on (Nginx), andindex.php or index.html in the directory,| Aspect | Rating |
|--------|--------|
| Code simplicity | ✅ Clean |
| Safety in production | ❌ Critical |
| Should be in web root | ❌ Absolutely not |
| Should be in require-dev | ✅ Yes |