Certainly not the only one. This thread has had a little discussion Cross origin.
Would help to have more info on what you are trying to do. I've managed to work this using a node package
http-cors-proxy - npm that creates a proxy address and works for my experiments.
There is also a chrome extension that helps with issues if you are working direct from the browser. Allow CORS: Access-Control-Allow-Origin - Chrome Web Store
Hope these help - others much more knowledgable can comment and there's a lot of advice to be found out there - Google is a friend.