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<?php $buffer = <<<XML <?xml version="1.0"?> <!DOCTYPE foo [ <!ELEMENT foo ANY > <!ENTITY xxe SYSTEM "data://text/html,aaaa" >]><foo>&xxe;</foo> XML; //libxml_disable_entity_loader(false); $xml = simplexml_load_string($buffer); var_dump($xml); echo "trying New SimpleXMLElement($xml)"; $xml = new SimpleXMLElement($buffer); var_dump($xml); echo 'Enabling LIBXML_NOENT for test reasons'; $xml = simplexml_load_string($buffer, 'SimpleXMLElement', LIBXML_NOENT); var_dump($xml);
Output for git.master, git.master_jit, rfc.property-hooks
object(SimpleXMLElement)#1 (1) { ["xxe"]=> object(SimpleXMLElement)#2 (1) { ["xxe"]=> object(SimpleXMLElement)#3 (0) { } } } trying New SimpleXMLElement()object(SimpleXMLElement)#2 (1) { ["xxe"]=> object(SimpleXMLElement)#1 (1) { ["xxe"]=> object(SimpleXMLElement)#3 (0) { } } } Enabling LIBXML_NOENT for test reasonsobject(SimpleXMLElement)#1 (1) { [0]=> string(4) "aaaa" }

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