Paypal_otp_bypass.txt -

Either replace the otp_code with a null value or modify the server's response to indicate success.

PayPal OTP Bypass (Hypothetical/Historical) Impact: Critical (Full Account Takeover)

Security researchers often target the following common failure points in mobile and web APIs to achieve an OTP bypass: Paypal_OTP_Bypass.txt

No publicly documented vulnerability report or technical write-up titled exactly exists in major security databases or recent disclosures as of April 2026 .

Intercepting the server's response (using tools like Burp Suite) and changing a boolean value (e.g., changing "success": false or "otp_verified": 0 to "success": true or "otp_verified": 1 ) to trick the client-side application into proceeding. Either replace the otp_code with a null value

Adding duplicate or modified parameters (e.g., ?verify=false ) to the request URL or body to override server-side logic.

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) Adding duplicate or modified parameters (e

Configure a proxy to capture the login request. Submit Credentials: Enter the target's email and password.