Input arriving over the network is checked: the device validates application-layer data received through network interfaces, including unauthenticated APIs and authentication endpoints, against unexpected input to prevent manipulation and failure, for example discarding out-of-range values and logging the event. Status in Table B.1: M (mandatory, a shall provision).
This control maps to 2 controls across 2 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.
Every mapping shown was judged rather than inferred from wording similarity, and the ones that failed review are published too. See the coverage reports and what was rejected.
The graph holds this control, the 2 it maps to, and the evidence behind each claim, over MCP and REST.