CVE-2026-47100: FunnelKit Funnel Builder for WooCommerce Checkout · Missing Authorization
Affects FunnelKit Funnel Builder for WooCommerce CheckoutSource CVE Database V5
Not known to be exploited · CVSS 8.7 High.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 39% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 19 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
Public exploit code: GitHub proofs of concept
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), GitHub proofs of concept, the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| FunnelKitFunnel Builder for WooCommerce Checkout | Affected
| Fixed in– |
AI-suggested
Until a fix is available, consider restricting access to the checkout endpoint or disabling the plugin if feasible to prevent exploitation.
Description
Funnel Builder for WooCommerce Checkout prior to 3.15.0.3 contains a missing authorization vulnerability in the public checkout endpoint that allows unauthenticated attackers to invoke internal methods and write arbitrary data to the plugin's External Scripts global setting. Attackers can inject malicious JavaScript through the External Scripts setting that executes in the browsers of all checkout page visitors.
References
- sansec.io/research/funnelkit-woocommerce-vulnerability-exploited (opens in a new tab)
- plugins.trac.wordpress.org/changeset/3530797/funnel-builder/tags/3.15.0.3/modules/checkouts/includes/class-wfacp-ajax-controller.php (opens in a new tab)
- vulncheck.com/advisories/funnel-builder-for-woocommerce-checkout-missing-authorization-via-ajax (opens in a new tab)