What is CORS?

• A browser feature called cross-origin resource sharing (CORS) permits managed access to resources that are outside of a certain domain. It expands and gives the same-origin policy more flexibility (SOP). However, if a website's CORS policy is improperly established and implemented, it also raises the possibility of cross-domain assaults. Cross-origin attacks like cross-site request forgery are not prevented by CORS (CSRF).

A technology called cross-origin resource sharing (CORS) enables limited resources on a web page to be requested from a domain other than the one that originally delivered the first resource.In order to evaluate if it is secure to approve the cross-origin request, a browser and server can communicate via the CORS standard. It is more secure than just permitting all cross-origin requests and offers greater flexibility and functionality than requests of the same origin only.