How to pass information from one route to another using POST without form?

Question

In the project I'm developing with NODEJS + EXPRESS + EJS , I need to pass information from one route to another ... Currently I'm using GET and passing through params in the URL, but for me this is dangerous and I would prefer to pass through the body that is safer. ..

The project is as follows: In my backend I use Axios to get information that comes from the given route, and pass this to a class in the backend that consumes a third-party API and get the answer and return it to my front again.