bindings/core/v8/V8DOMWrapper.h in Blink, as used in Google Chrome before 45.0.2454.101, does not perform a rethrow action to propagate information about a cross-context exception, which allows remote attackers to bypass the Same Origin Policy via a crafted HTML document containing an IFRAME element.
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.