What potential issues can arise when using PHP scripts within a Wordpress CMS, specifically with form submission?

One potential issue that can arise when using PHP scripts within a WordPress CMS for form submission is security vulnerabilities. To mitigate this risk, always sanitize and validate user input to prevent SQL injection, cross-site scripting, and other malicious attacks. Additionally, consider using WordPress functions and hooks for form handling to ensure compatibility with the CMS. 

// Example of sanitizing and validating user input in a WordPress form submission

if( isset( $_POST['submit'] ) ) {
    $name = sanitize_text_field( $_POST['name'] );
    $email = sanitize_email( $_POST['email'] );
    
    // Validate email format
    if( ! is_email( $email ) ) {
        echo 'Invalid email address';
    } else {
        // Process form submission
    }
}

Keywords

PHP scripts Wordpress CMS form submission security vulnerabilities cross-site scripting

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