FunnelKit Unauthenticated Stored Cross-Site Scripting via Order Fields
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The FunnelKit Funnel Builder for WooCommerce Checkout plugin for WordPress is vulnerable to stored cross-site scripting through the 'shipping_first_name' parameter in all versions up to and including 3.16.0.5. Input sanitization and output escaping are insufficient. An unauthenticated attacker can inject arbitrary web scripts into pages that run whenever a user opens an injected page.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
The FunnelKit – Funnel Builder for WooCommerce Checkout plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'shipping_first_name' parameter in all versions up to, and including, 3.16.0.5 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| teamfunnelkit | FunnelKit – Funnel Builder for WooCommerce Checkout | up to 3.16.0.5 | — | No fix listed | CNA |
- FunnelKit – Funnel Builder for WooCommerce Checkout Vendorteamfunnelkit Affected up to 3.16.0.5 Fixed in — No fix listed CNA
Remediation
No fixed version is listed for this plugin. Disable the FunnelKit plugin, or restrict access to checkout pages, until a fixed release is available.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-10 Threatist record created from CVE-2026-100147
- 2026-10-10 Alias added: GHSA-x8hv-gh93-vrwq
- 2026-10-11 CISA SSVC decision points changed
- 2026-10-11 Priority changed: MEDIUM → LOW
References
Other 5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/1807b544-e5fd-403b-85a6-e20bd4f10dec?source=cve
- https://plugins.trac.wordpress.org/browser/funnel-builder/tags/3.16.0.5/modules/thankyou-pages/includes/class-wffn-ecomm-tracking.php#L211
- https://plugins.trac.wordpress.org/browser/funnel-builder/tags/3.16.0.5/modules/thankyou-pages/includes/class-wffn-ecomm-tracking.php#L1114
- https://plugins.trac.wordpress.org/changeset/3733861/
- https://plugins.trac.wordpress.org/changeset/3733886/funnel-builder/trunk/modules/thankyou-pages/includes/class-wffn-ecomm-tracking.php
More teamfunnelkit vulnerabilities
- TI-2026-83500 Unauthenticated SQL injection in FunnelKit Automations plugin CVSS 3.1HIGH 7.5
- TI-2026-75165 Missing authorization in FunnelKit exposes WooCommerce order billing data CVSS 3.1HIGH 7.5
- TI-2026-86543 FunnelKit Payment Gateway for Stripe IDOR exposes order billing data CVSS 3.1HIGH 7.5
Sources
- CVE-2026-100147 · CVE Program
- CVE-2026-100147 · NVD
- FIRST EPSS
- GHSA-x8hv-gh93-vrwq · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences