It seems this version by Ark may have been a copy, in their description they point to the "original", https://chrome.google.com/webstore/detail/jsonview/chklaanhf..., which directs to the version claimed to have a security vulnerability and appears to have been pulled.
I attempted to load something and realized the extension I had just previously been using stopped working. [screenshot of the disabled extension](http://imgur.com/jBmnwf4)
I started using "JSON Formatter" instead ( https://chrome.google.com/webstore/detail/json-formatter/bcj... ) and it seems to work fine.