A method for obtaining and using a single-use OAuth 2.0 access token for securing specific service-based architecture (SBA) interfaces includes generating, by a consumer network function (NF) an access token request. The method further includes inserting, in the access token request, a hash of at least a portion of a service-based interface (SBI) request message. The method further includes sending the access token request to an NF repository function (NRF). The method further includes receiving, from the NRF, an access token response, the access token response having an OAuth 2.0 access token including the hash of the at least a portion of the SBI request message. The method further includes using the OAuth 2.0 access token including the hash of the at least a portion of the SBI request message to access an SBI service.