GHSA-MMW7-WQ3C-WF9P WWBN AVideo Affected by a PayPal IPN Replay Attack Enabling Wallet Balance Inflation via Missing Transaction Deduplication in ipn.php

Summary The PayPal IPN v1 handler at plugin/PayPalYPT/ipn.php lacks transaction deduplication, allowing an attacker to replay a single legitimate IPN notification to repeatedly inflate their wallet balance and renew subscriptions. The newer ipnV2.php and webhook.php handlers correctly deduplicate...

CVE-2026-39366

WWBN AVideo is an open source video platform. In versions 26.0 and prior, the PayPal IPN v1 handler at plugin/PayPalYPT/ipn.php lacks transaction deduplication, allowing an attacker to replay a single legitimate IPN notification to repeatedly inflate their wallet balance and renew subscriptions...

CVE-2009-1366

Cross-site scripting XSS vulnerability in Website\admin\Sales\paypalipn.aspx in DotNetNuke DNN before 4.9.3 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors related to "name/value pairs" and "paypal IPN functionality."...