version: "1.0.0" name: auth-bypass description: Hunt authentication/authorization bypass in route guards, role checks, tenant boundaries, and state-machine transitions. metadata: subdomain: web-exploitation when_to_use: "authentication authorization bypass route guard role check tenant boundary state machine transition session jwt"

Auth Bypass Playbook

Targets

• Endpoints with role-based access
• Admin-only routes
• Tenant-scoped resources
• Multi-step auth flows (MFA, password reset)

Common failure patterns

• Missing middleware on one route variant
• Trusting client-controlled role/tenant fields
• TOCTOU between check and action
• Alternate API versions lacking guard checks

Validation

• Positive: low-priv session performs high-priv action.
• Negative: same request with expected guard path should deny.