CVE-2014-10067: PayPal-Ipn Project PayPal-Ipn

Medium severity, CVSS 5.9. EPSS: 1.2% chance of exploitation in the next 30 days.

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.

Affected products

Published 2018-05-29. Last modified 2026-06-17.