WPFunnels Plugin up to 3.6.2 on WordPress Setting optin_allow_registration improper authorization

Summaryinfo

A vulnerability was found in WPFunnels Plugin up to 3.6.2 on WordPress. It has been declared as critical. Affected by this vulnerability is an unknown functionality of the component Setting Handler. Executing a manipulation of the argument optin_allow_registration can lead to improper authorization. This vulnerability is registered as CVE-2025-12353. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in WPFunnels Plugin up to 3.6.2 on WordPress. It has been declared as critical. This vulnerability affects some unknown processing of the component Setting Handler. The manipulation of the argument optin_allow_registration with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at wordfence.com. This vulnerability was named CVE-2025-12353. The exploitation appears to be easy. The attack can be initiated remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 11/09/2025). The MITRE ATT&CK project declares the attack technique as T1548.002.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-38358). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Name

• WPFunnels Plugin

Version

• 3.6.0
• 3.6.1
• 3.6.2

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Once again VulDB remains the best source for vulnerability data.

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