<?php $headerCSP = "Content-Security-Policy: script-src 'self' 'unsafe-inline' 'nonce-TmV2ZXIgZ29pbmcgdG8gZ2l2ZSB5b3UgdXA=';"; header($headerCSP); // Disable XSS protections so that inline alert boxes will work header ("X-XSS-Protection: 0"); # <script nonce="TmV2ZXIgZ29pbmcgdG8gZ2l2ZSB5b3UgdXA=">alert(1)</script> ?> <?php if (isset ($_POST['include'])) { $page[ 'body' ] .= " " . $_POST['include'] . " "; } $page[ 'body' ] .= ' <form name="csp" method="POST"> <p>Whatever you enter here gets dropped directly into the page, see if you can get an alert box to pop up.</p> <input size="50" type="text" name="include" value="" id="include" /> <input type="submit" value="Include" /> </form> ';