Old vulnerability (XML-RPC server accepts POST requests only)?

Question

Burglary protection

Hello everyone
. They gave the task of writing about the XML-RPC server accepts POST requests only vulnerability, which is on older versions of wordpress, I found a couple of articles in English about this bug, who knows what and what they think about this vulnerability, how to use it to put the site.
All questions are for informational purposes only!

Answer 1

This is not a vulnerability, but an invalid data response.
Although it is used in some exploits to check that the requested url, with a high probability, belongs to a WP that has XML-RPC enabled. And if successful, an attack is launched, such as SQL Injection: https://www.exploit-db.com/exploits/3656//