HashiCorp Vault and Vault Enterprise from 1.10.0-rc1 to 1.10.2 did not correctly configure and enforce MFA on login after server restarts. This affects the Login MFA feature introduced in Vault and Vault Enterprise 1.10.0-rc1 and does not affect the separate Enterprise MFA feature set. Fixed in 1.10.3.
CWE-287 - Improper Authentication
Improper (or broken) authentication attacks are widespread, and have accounted for many of the worst data breaches in recent years. Improper authentication attacks are a class of vulnerabilities where an attacker impersonates a legitimate user by exploiting weaknesses in either session management or credential management to gain access to the user’s account. This can result in disclosure of sensitive information, and can lead to system compromise, theft, identity theft, and fraud.