What potential pitfalls can arise from using a randomly generated session ID in PHP?

Using a randomly generated session ID in PHP can potentially lead to issues such as collisions, where two users end up with the same session ID, or predictability, where an attacker can guess the next session ID. To mitigate these risks, you can use the built-in session_regenerate_id() function to generate a new unique session ID for each user session. 

session_start();

if (!isset($_SESSION['initialized'])) {
    session_regenerate_id();
    $_SESSION['initialized'] = true;
}

Keywords

session ID randomly generated security vulnerability session hijacking session fixation

Related Questions