ios/web/web_state/ui/crw_web_controller.mm in Google Chrome before 52.0.2743.82 on iOS does not ensure that an invalid URL is replaced with the about:blank URL, which allows remote attackers to spoof the URL display via a crafted web site.
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.