What are the potential pitfalls when using a Bash script with shell_exec to zip files in PHP?

When using a Bash script with shell_exec to zip files in PHP, potential pitfalls include security vulnerabilities such as command injection if user input is not properly sanitized. To mitigate this risk, it is important to validate and sanitize any user input before passing it to the shell_exec function. 

// Sanitize user input before passing it to shell_exec
$filename = escapeshellarg($filename);
$zipCommand = "bash zip_files.sh $filename";
$output = shell_exec($zipCommand);

Keywords

Bash script shell_exec zip files PHP potential pitfalls

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