It depends on how the API is implemented. If the API requires authentication (such as a username/password) then it would be less vulnerable to CSRF attacks, but if the API does not require authentication then it would be more vulnerable to CSRF attacks. Most CSRF attacks involve submitting a malicious form or link that automatically sends a request to the target API server. So if an attacker can trick a user into clicking on a malicious link or submitting a malicious form, then they could potentially exploit the vulnerability and execute unauthorized...