What are some potential pitfalls when trying to execute Perl scripts from PHP, especially in a web server environment?

One potential pitfall when executing Perl scripts from PHP in a web server environment is not properly sanitizing user input, which can lead to security vulnerabilities such as code injection attacks. To mitigate this risk, it is important to validate and sanitize any user input before passing it to the Perl script. 

// Sanitize user input before executing Perl script
$user_input = $_POST['input'];
$sanitized_input = escapeshellarg($user_input);

// Execute Perl script with sanitized input
$output = shell_exec("perl script.pl " . $sanitized_input);
echo $output;

Keywords

Perl scripts PHP web server CGI permissions

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