https://nicheelab.com/en/articles/vault/userpass-auth/
Vault userpass Auth: Username/Password Login (2026)
userpass mechanics — bcrypt storage, token issuance, common bootstrap scenarios.
vaultuserpassauthusernamepassword
https://developer.hashicorp.com/vault/docs/auth/userpass
Userpass - Auth Methods | Vault | HashiCorp Developer
The "userpass" auth method allows users to authenticate with Vault using a username and password.
userpassauthmethodsvaulthashicorp