Category "same-origin-policy"

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