The ModuleSystem::RequireForJsInner function in extensions/renderer/module_system.cc in the extension bindings in Google Chrome before 51.0.2704.63 mishandles properties, which allows remote attackers to conduct bindings-interception attacks and bypass the Same Origin Policy via unspecified vectors.
Software security is not security software. Here we're concerned with topics like authentication, access control, confidentiality, cryptography, and privilege management.