For robust security, replace the native mail() function with a modern library that handles headers safely:
Vulnerability Profile: PHP Email Validation Exploits (Ref: CVE-2016-10033 / 10045) php email form validation - v3.1 exploit
In PHPMailer (CVE-2016-10033), attackers could craft a "malicious" email address containing a backslash and double quote (e.g., "Attacker \" -oQ/tmp/ -X/var/www/shell.php"@example.com ) to escape the command line and inject parameters into the sendmail command. This allows them to create a malicious file on the server and execute it remotely. For robust security, replace the native mail() function
The v3.1 exploit typically involves an attacker sending a crafted email with malicious headers or body content to a vulnerable PHP application. The application, failing to properly validate and sanitize the input, processes the malicious email and potentially allows the attacker to: For robust security