The _clone function in XML::LibXML before 2.0119 does not properly set the expand_entities option, which allows remote attackers to conduct XML external entity (XXE) attacks via a crafted XML data to the (1) new or (2) load_xml function.<a href=http://cwe.mitre.org/data/definitions/611.html>CWE-611: Improper Restriction of XML External Entity Reference ('XXE')</a>
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-3451
