Researchers bypass PayPal's two-factor authentication system
No publicly documented vulnerability report or technical write-up titled exactly exists in major security databases or recent disclosures as of April 2026 .
These use FIDO-based public-key cryptography, which is immune to traditional OTP bypass methods. Paypal_OTP_Bypass.txt
PayPal OTP Bypass (Hypothetical/Historical) Impact: Critical (Full Account Takeover)
PayPal uses real-time risk monitoring to detect anomalies (like a new device or IP), enforcing stricter authentication regardless of manual bypass attempts. Proof of Concept (Steps to Reproduce)
Exploiting legacy or mobile-specific API endpoints that allow session tokens to be generated with only a username and password, skipping the secondary verification required by the main web interface.
When prompted for the OTP, capture the request sent to the /verify-otp endpoint. Paypal_OTP_Bypass.txt
If the system fails to implement rate limiting on the OTP entry field, an attacker may attempt to brute-force a 4- or 6-digit code. Proof of Concept (Steps to Reproduce)