hunt-mfa-bypass

MFA bypass vulnerabilities can be detected using 11 distinct patterns covering OTP brute-forcing, workflow skipping, and SSO bypasses, alongside step-by-step Burp Suite workflow tracing to identify state transition gaps and validate confirmed account takeover flaws.

Common 2FA bypass patterns include OTP reuse, SSO MFA bypass, biometric replay, backup code brute-forcing, and device trust escalation, specifically targeting weak enforcement in OAuth device code flows and SSO integrations to achieve unauthorized account takeover.

To validate OTP race conditions, apply provided race condition validation checklists and proof-of-concept examples while tracing authentication state transitions in Burp Suite to confirm if concurrent requests bypass MFA enforcement.

You can chain MFA flaws with authentication weaknesses using provided chaining primitives, combining bypasses like cookie theft or password oracles with MFA enforcement gaps to achieve critical-severity account takeover during red team engagements.

This MFA testing approach covers both biometric replay and backup code brute-forcing, providing specific detection patterns and validation workflows to identify these implementation flaws and misconfigurations within target web applications.