Category "same-origin-policy"

XMLHttpRequest cannot load XXX No 'Access-Control-Allow-Origin' header

tl;dr; About the Same Origin Policy I have a Grunt process which initiates an instance of express.js server. This was working absolutely fine up until just now

Firefox extension request is interpreted as CORS

When porting my Chrome extension to a Firefox web-extension, I can't make any network requests because they are blocked by the same origin policy. As an exampl

What is the default value of Access-Control-Allow-Origin header?

Is "*" or the server's URI the default value for Access-Control-Allow-Origin header? If the header is not set, does it mean that every origin has access to the

Blocked a frame with origin "http://localhost:8080" from accessing a frame with origin "http://pentaho5XXX.com"

I've been about 2 days trying to do something that i can't figure out how to do. The thing is that i am customizing Pentaho user console(which is some kind of

CORS : Response to preflight request doesn't pass access control check: Redirect is not allowed for a preflight request [duplicate]

I am trying to integrate the angualar js app with the backend spring boot , in which i am facing the redirection is not allowed for a prefligh