Insecure channel found in source code

Hi guys, I found some urls in the source code with the following structure: http://xx.xx.xx.xx:port. The problem is that I cann’t check if they are forcing the https because it is running on a private network and we don’t have access to it.
I know that they must send all information on ciphered channels even if they’re using vpn, but my question is: Should we report it as FIN.S.22 even if it could mean a false positive since we cann’t check it?

You could check the type of client or library that is using to connect, and review if this library supports SSL forcing or changing to HTTPS, if not you easily can conclude that the vulnerability exists.

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