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- Snyk ID npm:paypal-ipn:20141203
- published 3 Dec 2014
- disclosed 3 Dec 2014
- credit Martin Angelov
How to fix?
Upgrade to version 3.0.0 or greater.
paypal-ipn 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." 
Source: Node Security Project