I am currently developing a JavaScript library and I want users to be able to make requests to my server. To facilitate this, I have included the access-control-allow-origin and method headers in my server responses.
Everything seems to be working well, but my concern is about the security of my server. Are there any other implications that I should be considering?
Thank you in advance.
The level of security depends on the strength of the code implemented on your server. Allowing individuals to execute AJAX requests that have the capability to delete tables can compromise security. However, adhering to recommended practices for website and scripting security can ensure that handling such requests is just as safe as handling any other standard request on your server.
Is it possible for unauthorized users to manipulate your server (e.g. increasing a voting counter, leaving a comment, removing a post, etc)? If so, does it raise concerns if a website that you do not manage encourages their users to utilize these features on your website? Are the access control headers configured to allow remote XHR requests for these actions? If yes, then there is a potential security issue.
Can registered users make changes to your server? If so, does it raise concerns if a website that you do not manage asks their users, who are also your users, to use these features on your website? Do the access control headers permit remote XHR requests for these actions? Do the access control headers allow authentication methods like cookies? If so, there may be a security problem.
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