What is the potential issue with using $_GET values in dynamically generated tables in PHP?

Using $_GET values directly in dynamically generated tables in PHP can pose a security risk as it opens up the possibility of XSS (Cross-Site Scripting) attacks. To mitigate this risk, it is recommended to properly sanitize and validate the input data before using it in the table. This can be done by using functions like htmlspecialchars() to escape special characters and prevent malicious code from being executed. 

<?php
// Sanitize the $_GET value before using it in the table
$filtered_value = htmlspecialchars($_GET['value']);

// Generate the table with the sanitized value
echo "<table>";
echo "<tr><td>".$filtered_value."</td></tr>";
echo "</table>";
?>

Keywords

$_GET dynamically generated tables security vulnerability SQL injection cross-site scripting

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