paypal-ipn before 3.0.0 uses the `test_ipn` parameter (which is set by the PayPal IPN simulator) to determine if it should use the production PayPal site or the sandbox. With a bit of time, an attacker could craft a request using the simulator that would fool any application which does not explicitly check for test_ipn in production.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| paypal-ipn(npm) | 0 | 3.0.0 | N/A |
CVSS Metrics
