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OpenAdvisories
Medium · 5.3 CVE-2026-83537 EUVD-2026-74723GHSA-89f9-r4mq-rxxm

WP Express Checkout < 2.5.0 - Unauthenticated Payment Bypass via wpec_process_empty_payment

Published Sep 9, 2026 · Updated Sep 9, 2026 · Assigned by WPScan

Description

The WP Express Checkout WordPress plugin before 2.5.0 does not verify server-side that a payment was actually completed before marking an order as paid, allowing unauthenticated users to forge a completed order without paying.

Affected products

VendorProductAffectedFixed
— WP Express Checkout < 2.5.0 2.5.0

References