What is CORS and how does it relate to authentication?

What is CORS and how does it relate to authentication?

CORS stands for Cross-Origin Resource Sharing. It's a security feature that allows or restricts resources on a web page to be requested from another domain outside the domain from which the resource originated. It plays a crucial role in authentication by controlling which domains can access your API.

Why is CORS important for web applications?

CORS is important because it helps prevent malicious websites from accessing sensitive data from another domain. It ensures that only trusted domains can interact with your API, which is essential for maintaining security in web applications.

How can I enable CORS in my application?

You can enable CORS by setting the appropriate headers in your server's response. For example, in a Node.js application, you can use the 'cors' middleware to easily configure it.

Does CORS affect mobile applications?

Yes, CORS can affect mobile applications that make requests to web APIs. If the API does not allow requests from the mobile app's origin, the requests will be blocked.