FunnelKit <= 3.16.0.6 - Missing Authorization to Unauthenticated Sensitive Information Disclosure via 'order_id' / 'order' POST Parameter
Strategic Overview
- Status
- Patched in 3.17.0
- Affected Plugin
- FunnelKit – Funnel Builder Plugin for WooCommerce Checkout
- Affected Version
<= 3.16.0.6- CVSS
- 7.5High
- Weakness type
- CWE-862 · Missing Authorization
- CVE
CVE-2026-107746
At a glance
CVE-2026-107746 is a high-severity Missing Authorization vulnerability in the FunnelKit WordPress plugin, affecting versions <= 3.16.0.6. It carries a CVSS score of 7.5 (reachable over the network; low attack complexity; high confidentiality impact). Exploitation requires no authentication. The issue is fixed in version 3.17.0; sites on affected versions should update now. Disclosed October 2026, reported by Kuba.
Vulnerability Overview
The FunnelKit – Funnel Builder for WooCommerce Checkout plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.16.0.6 This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to retrieve billing PII — including full name, street address, email address, and phone number — for any WooCommerce order on the site by submitting an enumerable sequential order ID. This is only exploitable on sites where a FunnelKit thank-you page exists that renders the [wfty_order_meta] or [wfty_order_total] shortcode.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality.
CWE-862: Missing Authorization
Reaching this weakness in FunnelKit <= 3.16.0.6 takes no account at all. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.
Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For FunnelKit the fix is 3.17.0: builds <= 3.16.0.6 are affected, anything from 3.17.0 onward is not.
Remediation
Update to version 3.17.0, or a newer patched version
How does WordSec protect against this?
This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: FunnelKit 3.17.0 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in FunnelKit – Funnel Builder Plugin for WooCommerce Checkout
- 9.8CVE-2025-26979: Funnel Builder by FunnelKit <= 3.9.0 LFI
CVE-2025-26979 - 8.8CVE-2025-7654: Multiple Plugins By FunnelKit <= Info Exposure
CVE-2025-7654 - 8.1CVE-2025-54750: Funnel Builder by FunnelKit <= 3.11.1 LFI
CVE-2025-54750 - 7.5CVE-2026-42381: FunnelKit SQL Injection
CVE-2026-42381 - 7.5CVE-2025-14169: FunnelKit SQL Injection
CVE-2025-14169 - 7.2CVE-2026-100147: FunnelKit <= 3.16.0.5 Stored Cross-Site Scripting
CVE-2026-100147 - 7.2CVE-2026-57816: FunnelKit Stored XSS
CVE-2026-57816 - 7.2CVE-2026-48966: FunnelKit Stored XSS
CVE-2026-48966
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C