XPATH Injection

Description
Similar to SQL Injection, XML Injection attacks occur when a web site uses user supplied information to query XML data. By sending intentionally malformed information into the web site, an attacker can find out how the xml data is structured or access data that they may not normally have access to. They may even be able to elevate their privileges on the web site if the xml data is being used for authentication (such as an xml based user file).