CVE-2026-118088 in WPFunnels Plugin
Summary
by MITRE • 10/29/2026
Missing Authorization vulnerability in WPFunnels Team WPFunnels wpfunnels allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects WPFunnels: from n/a through 3.13.5.
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Analysis
by VulDB Data Team • 10/29/2026
The identified security flaw resides within the WPFunnels plugin, specifically affecting versions ranging from an unspecified initial release up to version 3.13.5. This vulnerability is classified as a Missing Authorization issue, which fundamentally represents a failure in implementing proper access control mechanisms for sensitive functions or data resources. In web application architecture, authorization checks are critical for ensuring that only authenticated and authorized users can perform specific actions or access particular information. The absence of these checks allows attackers to bypass intended security boundaries, leading to unauthorized interactions with the system's core functionalities. This type of flaw is commonly associated with CWE-284, which describes Improper Access Control, where an actor gains privileges they are not entitled to due to a misconfiguration or logical error in the application code.
From a technical perspective, this vulnerability likely stems from insufficient validation of user roles and permissions before processing requests related to funnel management, customer data, or administrative settings within WordPress. When such checks are missing, any authenticated user with even minimal privileges may be able to execute actions reserved for higher-level administrators, or in some cases, unauthenticated users might interact with endpoints that should remain private. The exploitation of this flaw does not require complex payload injection but rather relies on manipulating HTTP requests to target specific API endpoints or administrative pages without the necessary authorization tokens or role-based checks being enforced by the server-side logic. This aligns closely with MITRE ATT&CK technique T1078, Valid Accounts, where attackers leverage legitimate credentials to access resources they should not be able to reach, thereby escalating their influence within the compromised environment.
The operational impact of this vulnerability is significant for organizations relying on WPFunnels for e-commerce or marketing automation workflows. An attacker exploiting this flaw could potentially modify funnel configurations, alter customer data, inject malicious scripts into public-facing pages through misconfigured settings, or extract sensitive business intelligence such as sales reports and user lists. This compromises the confidentiality, integrity, and availability of the web application's data and functionality. For businesses using WordPress, which powers a substantial portion of the internet, such vulnerabilities can lead to defacement, data breaches, and loss of customer trust. The ability to manipulate access control levels means that even low-privilege users, such as subscribers or contributors, could escalate their privileges to perform administrative tasks, effectively taking over the site's management capabilities without detection by standard security monitoring tools that focus on external attacks rather than internal privilege escalation.
To mitigate this risk, immediate action is required to update the WPFunnels plugin to a version later than 3.13.5, where these authorization checks have presumably been corrected by the developers. Organizations should also implement defense-in-depth strategies by ensuring that WordPress installations are hardened against common attack vectors, including restricting access to administrative areas via IP whitelisting and enforcing strong password policies for all user accounts. Regular security audits and penetration testing focused on role-based access control can help identify similar misconfigurations in other plugins or themes. Additionally, monitoring server logs for unusual activity patterns indicative of privilege escalation attempts provides an early warning system against exploitation of such vulnerabilities. Maintaining up-to-date software components is the most effective defense against known issues like this missing authorization flaw, as vendors typically release patches to address identified security gaps promptly once they are disclosed and verified.