Sr - Denied Guestbook V2.1.7 — Fix

After applying Sr-Denied Guestbook V2.1.7, the following tests were performed:

$name = htmlspecialchars($_POST['name'], ENT_QUOTES, 'UTF-8'); $message = strip_tags($_POST['message'], '<b><i>'); // Allow basic formatting only echo "<p>" . htmlspecialchars($name) . "</p>"; File: admin/delete_entry.php Sr - Denied Guestbook V2.1.7 Fix

session_start(); if ($_POST['csrf_token'] !== $_SESSION['csrf_token']) die("CSRF validation failed."); After applying Sr-Denied Guestbook V2

$name = $_POST['name']; echo "<p>$name</p>"; After applying Sr-Denied Guestbook V2.1.7

http://target.com/admin/delete_entry.php?id=1 OR 1=1 would delete all entries. The patch introduces multiple security layers. 4.1 Input Sanitization (XSS Fix) File: post_entry.php & view_guestbook.php