CVE-2025-12353

WPFunnels <= 3.6.2 - Unauthorized User Registration

2025-11-07 15:06
Ahmed Rayen Ayari

Strategic Overview

Status
Patched in 3.6.3
Affected Plugin
WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell
Affected Version
<= 3.6.2
CVSS
5.3Medium
Weakness type
CWE-639 · Authorization Bypass Through User-Controlled Key
CVE
CVE-2025-12353
View all WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell vulnerabilities

At a glance

CVE-2025-12353 is a medium-severity Authorization Bypass Through User-Controlled Key vulnerability in the WPFunnels WordPress plugin, affecting versions <= 3.6.2. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 3.6.3; sites on affected versions should update now. Disclosed November 2025, reported by Ahmed Rayen Ayari.

Vulnerability Overview

The WPFunnels – The Easiest Funnel Builder For WordPress And WooCommerce To Collect Leads And Increase Sales plugin for WordPress is vulnerable to unauthorized user registration in all versions up to, and including, 3.6.2. This is due to the plugin relying on a user controlled value 'optin_allow_registration' to determine if user registration is allowed, instead of the site-specific setting. This makes it possible for unauthenticated attackers to register new user accounts, even when user registration is disabled.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-639: Authorization Bypass Through User-Controlled Key

WPFunnels <= 3.6.2 carries this weakness at optin_allow_registration, and reaching it takes a caller who can reach the endpoint. Authorization bypass through a user-controlled key, often called insecure direct object reference, means the application looks up a record by an identifier from the request without checking that the caller owns it.

Changing a number in the request is enough to read or modify other users' records, which on commerce and membership sites means customer data. For WPFunnels the fix is 3.6.3: builds <= 3.6.2 are affected, anything from 3.6.3 onward is not.

Remediation

Update to version 3.6.3, or a newer patched version

How does WordSec protect against this?

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: WPFunnels 3.6.3 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2025-12353https://www.wordfence.com/threat-intel/vulnerabilities/id/4e376c96-47a8-419f-ab45-f7c46510c767https://nvd.nist.gov/vuln/detail/CVE-2025-12353

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C