# SellKit – Funnel builder and checkout optimizer for WooCommerce to sell more, faster <= 2.8.0 - Unauthenticated Insecure Direct Object Reference to Order Payment Link Disclosure via 'order' Parameter

- **ID:** WPSEC-2026-2034
- **Plugin:** SellKit – Funnel builder and checkout optimizer for WooCommerce to sell more, faster (`sellkit`), https://wordpress.org/plugins/sellkit/
- **Affected versions:** all versions before 2.8.1
- **Fixed in:** 2.8.1 (Update to 2.8.1 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 2026-10-30)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/sellkit
- **Fix released:** 2026-10-29
- **Published:** 2026-10-30
- **URL:** https://wpsec.com/vuln/WPSEC-2026-2034/

## Description

The SellKit plugin for WordPress is vulnerable to Insecure Direct Object Reference via the 'order' query parameter of the Order Details Elementor widget in all versions up to, and including, 2.8.0. This is due to the widget loading the WooCommerce order named by a user-supplied numeric ID without checking the order key. For failed orders it then prints the order's payment link, which contains the secret order key. This makes it possible for unauthenticated attackers to enumerate order IDs on a page that contains the widget and obtain the order keys of failed orders. They can then use those keys to view the order details, including the customer's personal and address information.

## References

- https://wpsec.com/vuln/WPSEC-2026-2034/
- https://plugins.svn.wordpress.org/sellkit/tags/2.8.1/
- https://wordpress.org/plugins/sellkit/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-2034/

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.