PHP does not validate the relationship between the soap.wsdl_cache_dir
directive and the open_basedir directive, which allows remote attackers to
bypass intended access restrictions by triggering the creation of cached
SOAP WSDL files in an arbitrary directory.
The SOAP parser in PHP allows remote attackers to read arbitrary files
via a SOAP WSDL file containing an XML external entity declaration in
conjunction with an entity reference, related to an XML External Entity
(XXE) issue in the soap_xmlParseFile and soap_xmlParseMemory functions.