HWINFO reports, 0.384 minimum, and 1.44 maximum and temperatures 22c, 43c. I'm worried about the voltage going over 1.4 and wonder if 1.3 is the voltage it should reach. I disabled Auto from CPU voltage and left it at Normal. Should I undervolt the CPU to protect this higher voltage?
The Ryzen processors may spike up to 1.5 volts or a little higher but that is considered to be normal. As long as voltages doesn't stay at 1.45 or higher constantly. The processor won't run voltages higher than what it is programmed in its parameters. The processor will never go above any voltages or temperatures that may cause damage to the processor.
Unless you are Overclocking. In which case you may run the processor's voltages past its safety range manually.