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OpenAdvisories
Medium · 5.3 CVE-2026-104641 EUVD-2026-107143GHSA-g546-6f38-794c

Simple Shopping Cart < 5.3.3 - Unauthenticated Payment Bypass via Unverified PayPal IPN Recipient

Published Oct 21, 2026 · Updated Oct 21, 2026 · Assigned by WPScan

Description

The Simple Shopping Cart WordPress plugin before 5.3.3 does not verify that a PayPal payment notification is for a payment received by the site owner's PayPal account in its default configuration, allowing unauthenticated attackers to have their orders marked as paid using a payment made to an account they control.

Affected products

VendorProductAffectedFixed
— Simple Shopping Cart < 5.3.3 5.3.3

References