By default, you would just be buried locally according to the local procedures. In particular, if some burial practices are forbidden or there is a short delay to dispose of the remains, these rules still apply. Being a foreign national would not necessarily prevent the local authorities from proceeding with a burial.
If the family wants the remains to be buried differently or elsewhere, they have to bear the costs and face different hurdles (to get the permission on both ends, etc.) It's possible to get some assistance from your country's consulates abroad, from companies specializing in this (some funeral homes advertise these services) or to get an insurance covering the costs (“repatriation of remains“).
Article 37 of the Vienna Convention on Consular Relations does provide that when a state learns of the death of a foreign national, they should inform their consulate. This convention has been ratified by nearly all countries in the world and reflects older international customs so this rule would be observed very broadly.