What potential issues can arise when passing variables via GET in PHP scripts?

One potential issue when passing variables via GET in PHP scripts is the risk of exposing sensitive information, as the data is visible in the URL. To solve this, you can encrypt the data before sending it via GET to enhance security and prevent unauthorized access to the information. 

// Encrypt the variable before passing it via GET
$variable = "sensitive_data";
$encrypted_variable = base64_encode(openssl_encrypt($variable, 'AES-256-CBC', 'secret_key', 0, '16charIV'));

// Pass the encrypted variable via GET
<a href="script.php?data=<?php echo $encrypted_variable; ?>">Link</a>

Keywords

security vulnerabilities SQL injection cross-site scripting data leakage URL encoding

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