What are the potential risks of allowing users to inject PHP code into an application?

Allowing users to inject PHP code into an application can pose significant security risks, such as remote code execution, data manipulation, and unauthorized access to sensitive information. To prevent these risks, it is essential to sanitize and validate user input before executing any PHP code. 

$user_input = $_POST['input'];

// Sanitize and validate user input
$filtered_input = filter_var($user_input, FILTER_SANITIZE_STRING);

// Execute safe PHP code
eval($filtered_input);

Keywords

SQL injection cross-site scripting remote code execution security vulnerabilities user input validation

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