MIME sniffing identifies file types accessed by web browsers, posing security risks like XSS and drive-by downloads. Properly configuring servers to send correct MIME types, using X-Content-Type-Options: nosniff, implementing Content Security Policies (CSP), validating inputs, limiting allowed file types, and using vulnerability scanners can mitigate these risks and protect websites, especially WordPress sites.
What is MIME Sniffing? Definition and How to Prevent Attacks