Passwordless Login by VentraConnect < 1.4.1 - Unauthenticated Account Takeover via Email OTP Brute Force

Description

The plugin does not enforce rate limiting or a working attempt lockout on its passwordless email one-time-password verification, and stores the short numeric codes in plaintext, allowing an unauthenticated attacker who knows a registered email address to brute-force the code and log in as that user, including an administrator, leading to full site takeover.