CVE-2026-40801 in Wordable Plugin
Summary
by MITRE • 10/10/2026
Subscriber Broken Access Control in Wordable <= 8.2.10 versions.
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Analysis
by VulDB Data Team • 10/10/2026
The vulnerability identified as Subscriber Broken Access Control within the Wordable plugin for WordPress, affecting versions up to and including 8.2.10, represents a critical failure in server-side access control mechanisms. This flaw allows unauthorized users to perform actions that should be restricted to authenticated subscribers or higher-privileged roles. In the context of web application security, broken access control is one of the most prevalent and dangerous categories of vulnerabilities, often leading to data breaches, privilege escalation, and complete system compromise if left unpatched. The specific nature of this flaw suggests that the plugin fails to adequately verify whether a user requesting an action possesses the necessary permissions before executing it, thereby bypassing intended security boundaries established by the application logic.
From a technical perspective, this vulnerability likely stems from insufficient validation of user roles or capabilities during API calls or administrative operations handled by the Wordable plugin. When a request is made to modify subscriber settings, access tokens, or other sensitive data associated with user accounts, the backend code does not strictly enforce that the requester holds at least the Subscriber role or higher. This oversight enables an attacker who has obtained valid credentials for even the lowest privilege level on the WordPress installation to interact with endpoints designed for administrators or editors. The absence of proper authorization checks means that any authenticated user can manipulate data belonging to other users or alter system configurations, effectively elevating their privileges without needing additional exploits such as cross-site scripting or SQL injection.
The operational impact of this vulnerability is significant due to the widespread use of WordPress and its plugins in enterprise environments. An attacker exploiting this broken access control could potentially view private subscriber information, modify user profiles, change subscription statuses, or even delete accounts depending on the specific functions exposed by the plugin. This leads directly to a violation of confidentiality and integrity principles defined in standard security frameworks. Furthermore, because Wordable often deals with email marketing and audience management, compromising these features can result in reputational damage through unauthorized communications sent from the site’s domain or loss of customer data stored within subscriber lists. The ability for low-privileged users to perform administrative tasks undermines the fundamental principle of least privilege, making it easier for attackers to pivot laterally across a compromised network if WordPress is integrated with other backend services.
This vulnerability aligns closely with CWE-284 Improper Access Control and CWE-862 Missing Authorization Check as defined by the Common Weakness Enumeration project. It also maps to techniques observed in the MITRE ATT&CK framework, specifically T1078 Valid Accounts where attackers leverage legitimate credentials to gain unauthorized access, and potentially T1098 Account Manipulation if they modify user attributes to maintain persistence or escalate privileges further. The exploitation does not require complex payload construction; rather, it relies on crafting HTTP requests with valid session cookies but insufficient role claims, making it highly accessible to automated scanning tools and less experienced threat actors alike.
To mitigate this risk, immediate action is required by updating the Wordable plugin to version 8.2.11 or later where these access control checks have been corrected. Administrators should verify that all instances of WordPress running vulnerable versions are patched promptly. In addition to patching, it is advisable to implement Web Application Firewall rules that monitor for anomalous patterns in user role validation and restrict direct API access unless explicitly required by trusted sources. Regular security audits focusing on authorization logic across all installed plugins can help identify similar flaws before they are exploited. Organizations should also enforce strong password policies and multi-factor authentication to reduce the likelihood of credential theft, which is often a prerequisite for exploiting broken access controls effectively.