Reading this Vault Compliance I understand that vault is FIPS compliant.
It’s this certification only for Vault Enterprise or the open-source version is covered too?
This presentation & demo might address your question, at least in parts:
Achieving FIPS 140-2 Compliance with HashiCorp Vault
May 26, 2021
What about building Vault using boringcrypto to achieve FIPS 140-2 level 1 compliance?
So far it builds, and seems to be linked to boringSSL.