Category: Question and Answers

This solution is summarized from an archived support forum post. This information may have changed. If you notice an error, please let us know in Discord.

Is there any technique used in Appsmith for prevent CORS misconfiguration?


I was told that my application may have a CORS misconfiguration issue during security testing. I reached out to Appsmith to see if there is a way to prevent this issue, but it seems that it can only be fixed on my server, so there is no solution from their side.


As per the security testing done on the application, there was a chance for CORS misconfiguration. However, the issue cannot be resolved from Appsmith's end as it needs to be set up on the server. Therefore, there is no method using Appsmith to prevent CORS issues.

If CORS misconfiguration is detected in an application, it can be fixed on the server-side by adding appropriate headers to the response. The headers can allow or restrict certain domains from accessing the application resources. For example, the following headers can be added to allow all domains to access the resources:

Access-Control-Allow-Origin: *
Access-Control-Allow-Credentials: true

Alternatively, if specific domains need access to the resources, the headers can be modified accordingly. For example:

Access-Control-Allow-Methods: GET, POST, OPTIONS
Access-Control-Allow-Headers: Content-Type

The above headers allow only to access the resources and restrict the allowed methods to GET, POST, and OPTIONS, and the allowed headers to Content-Type.

Overall, fixing CORS misconfiguration requires server-side changes and cannot be resolved from Appsmith's end.