# FunnelKit Payment Gateway for Stripe WooCommerce <= 1.14.0 - Unauthenticated Insecure Direct Object Reference to Sensitive Information Exposure via Order-Pay Page

- **ID:** WPSEC-2026-0838
- **Plugin:** FunnelKit Payment Gateway for Stripe WooCommerce (`funnelkit-stripe-woo-payment-gateway`), https://wordpress.org/plugins/funnelkit-stripe-woo-payment-gateway/
- **Affected versions:** all versions before 1.14.0.0.1
- **Fixed in:** 1.14.0.0.1 (Update to 1.14.0.0.1 or later.)
- **Severity:** Medium 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
- **Weakness:** CWE-639
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-10-13)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/funnelkit-stripe-woo-payment-gateway
- **Fix released:** 2026-10-12
- **Published:** 2026-10-13
- **URL:** https://wpsec.com/vuln/WPSEC-2026-0838/

## Description

The FunnelKit Payment Gateway for Stripe WooCommerce plugin for WordPress is vulnerable to Insecure Direct Object Reference via the order-pay page script data in all versions up to, and including, 1.14.0, due to the plugin loading the order straight from the 'order-pay' query variable when preparing localized billing details and Google Pay order data, without validating the order key or confirming that the requester owns the order. This makes it possible for unauthenticated attackers to enumerate sequential order IDs and obtain other customers' billing information (name, email address, postal address, phone number) as well as order line items and totals.

## References

- https://wpsec.com/vuln/WPSEC-2026-0838/
- https://plugins.svn.wordpress.org/funnelkit-stripe-woo-payment-gateway/tags/1.14.0.0.1/
- https://wordpress.org/plugins/funnelkit-stripe-woo-payment-gateway/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-0838/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.