CVE-2026-84908 Missing authorization in WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell
Unauthenticated attackers can manipulate product prices in WPFunnels by adding arbitrary items to carts at discounted rates, causing revenue loss.
- 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-2026-84908?
CVE-2026-84908 is a medium-severity missing authorization vulnerability in getwpfunnels WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell, published on 9 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The WPFunnels plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 3.12.13. This is due to the plugin registering the 'wpfnl_load_payment' AJAX action for both authenticated and unauthenticated (wp_ajax_nopriv_) users and the underlying add_offer_product_to_cart() function performing no nonce verification, no capability check, and no validation that the attacker-supplied product_id is the offer product actually configured on the attacker-supplied step_id. This makes it possible for unauthenticated attackers to add arbitrary WooCommerce products to a cart at any discounted price configured on any funnel step, enabling price manipulation and revenue loss at checkout.
Weakness: CWE-862
Which versions are affected by CVE-2026-84908?
How do I fix CVE-2026-84908?
No fix has been published for CVE-2026-84908 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-2026-84908 being exploited?
There is no known exploitation of CVE-2026-84908 in the wild and no public exploit code.
Sources
Also known as GHSA-cr4w-84pm-5qc4.