CVE-2026-84908: Auth Bypass (CVSS 5.3)

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.

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CVSS v3.1 Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS — Exploit Prediction

0.0024

Probability of exploitation

0.16%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-862 Missing Authorization

References

Other References

https://plugins.trac.wordpress.org/browser/wpfunnels/tags/3.12.12/includes/core/offer/class-wpfnl-offer.php#L166 https://plugins.trac.wordpress.org/browser/wpfunnels/tags/3.12.12/includes/core/offer/class-wpfnl-offer.php#L213 https://plugins.trac.wordpress.org/browser/wpfunnels/tags/3.12.12/includes/core/offer/class-wpfnl-offer.php#L71 https://plugins.trac.wordpress.org/browser/wpfunnels/tags/3.12.13/includes/core/offer/class-wpfnl-offer.php#L166 https://plugins.trac.wordpress.org/browser/wpfunnels/tags/3.12.13/includes/core/offer/class-wpfnl-offer.php#L213 https://plugins.trac.wordpress.org/browser/wpfunnels/tags/3.12.13/includes/core/offer/class-wpfnl-offer.php#L71 https://plugins.trac.wordpress.org/changeset?reponame=&old=3675200%40wpfunnels&new=3675200%40wpfunnels https://www.wordfence.com/threat-intel/vulnerabilities/id/5a24d442-56f9-4f6d-bff6-0eb354249895?source=cve

Frequently Asked Questions

What is CVE-2026-84908? +

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. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2026-84908? +

CVE-2026-84908 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0024, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-84908? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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