What are common issues with using $_SESSION variables in PHP?

One common issue with using $_SESSION variables in PHP is that they can be vulnerable to session hijacking and session fixation attacks if not properly secured. To mitigate these risks, it is recommended to use session_regenerate_id() to generate a new session ID on each request. This helps prevent attackers from hijacking a user's session or fixing their own session ID. 

<?php
// Start the session
session_start();

// Regenerate session ID to prevent session fixation attacks
session_regenerate_id();

Keywords

$_SESSION security vulnerabilities session hijacking session fixation data tampering

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