CVE-2026-47100 Funnel Builder for WooCommerce Checkout < 3.15.0.3 Missing Authorization via AJAX
Unauthenticated attackers can inject malicious JavaScript into checkout pages by exploiting missing authorization in the External Scripts setting.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-47100?
CVE-2026-47100 is a high-severity missing authorization vulnerability in FunnelKit Funnel Builder for WooCommerce Checkout, published on 19 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-862
Which versions are affected by CVE-2026-47100?
How do I fix CVE-2026-47100?
No fix has been published for CVE-2026-47100 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-47100 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-47100 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-cffp-87j8-rff2.