When a user navigates to your website, they expect a secure connection. However, if the "Request Method" of an HTTP request is changed from GET to POST or another method that should only be used for POST requests, it can lead to security-related issues.
This occurs when the application sends a request using an HTTP method other than GET (the default) to an HTTPS port. The result is a "400 Bad Request" error, which indicates that the server cannot process the request.
There are several reasons why this can happen: (1) An application incorrectly identifies an HTTPS port as a GET port; (2) A browser or plugin misinterprets the request method; and (3) The server does not enforce HTTP method restrictions.
To prevent these errors, it's essential to ensure that all requests are made using only POST methods. You can also use tools like Cloudflare to inspect and modify your website's request methods before they reach the server.
Source URL: https://conferences.law.stanford.edu/ipsummerschool2022/2013/12/29/et-auctor-tortor-nunc