Is CVE-2026-109991 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-109991 being exploited in the wild.

How severe is CVE-2026-109991?

High severity, with a CVSS score of 7.5, published 7 November 2026.

Which products and versions are affected?

FunnelKit Payment Gateway for Stripe WooCommerce up to and including 1.15.0.2.

Is there a fix for CVE-2026-109991?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-109991 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-109991?

Check whether you run FunnelKit Payment Gateway for Stripe WooCommerce at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-109991: FunnelKit Payment Gateway for Stripe WooCommerce IDOR in order-pay parameter

CVE-2026-109991 · Severity: high · CVSS 7.5 · Published 2026-11-07

The FunnelKit Payment Gateway plugin for WordPress WooCommerce allows unauthenticated attackers to read sensitive customer billing information—names, emails, phone numbers, and addresses—by guessing sequential order IDs. The plugin exposes this data in web page responses even when WooCommerce itself blocks access, enabling attackers to enumerate and harvest PII from any store using the vulnerable plugin.

Vendors: FunnelKit.

Quick answers

Is CVE-2026-109991 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-109991 being exploited in the wild.
How severe is CVE-2026-109991?: High severity, with a CVSS score of 7.5, published 7 November 2026.
Which products and versions are affected?: FunnelKit Payment Gateway for Stripe WooCommerce up to and including 1.15.0.2.
Is there a fix for CVE-2026-109991?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-109991 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-109991?: Check whether you run FunnelKit Payment Gateway for Stripe WooCommerce at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is an Insecure Direct Object Reference (IDOR) in the order-pay parameter due to missing authorization checks on user-controlled order IDs. The plugin calls wp_localize_script to emit order data into the fkwcs_data JavaScript object without validating the requester's access rights, and this occurs independently of WooCommerce's own order-key validation, allowing unauthenticated access. Attackers can enumerate sequential order IDs to extract PII from the response payload.

Affected products

FunnelKit Payment Gateway for Stripe WooCommerce up to and including 1.15.0.2

Timeline

2026-11-07: disclosed

References

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