CVE-2026-11901: Insufficient Verification of Data Authenticity

The WP Hotel Booking plugin for WordPress is vulnerable to Insufficient Verification of Data Authenticity in all versions up to, and including, 2.3.1. This is due to the webhookprocesspaypalstandard IPN handler selecting its PayPal validation endpoint from the attacker-controlled $REQUEST'testipn...

WS-2014-0003

Validation Bypass - paypal-ipn uses the testipn parameter which is set by the PayPal IPN simulator to determine if it should use the production PayPal site or the sandbox...

EUVD-2020-0624

Malware in sbrugna...

Design/Logic Flaw

paypal-ipn before 3.0.0 uses the testipn 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...

CVE-2014-10067

paypal-ipn before 3.0.0 uses the testipn 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...

CVE-2014-10067

paypal-ipn before 3.0.0 uses the "testipn" 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 explicitl...

CVE-2014-10067: Improper Authentication

paypal-ipn before 3.0.0 uses the testipn 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...