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<?php $xml = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" [ <!ENTITY xxe SYSTEM "file:///etc/passwd" > ]> <html><p>&xxe;</p></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: 4 in /in/7eTTZ on line 12 Warning: DOMDocument::loadHTML(): htmlParseStartTag: invalid element name in Entity, line: 5 in /in/7eTTZ on line 12 Warning: DOMDocument::loadHTML(): htmlParseStartTag: misplaced <html> tag in Entity, line: 7 in /in/7eTTZ on line 12 <?xml version="1.0" standalone="yes"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><body><p> ]&gt; </p><p>&amp;xxe;</p></body></html>

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