CVE-2024-43240 in Ultimate Membership Pro Plugin
Summary
by MITRE • 08/19/2024
Improper Authentication vulnerability in azzaroco Ultimate Membership Pro indeed-membership-pro.This issue affects Ultimate Membership Pro: from n/a through <= 12.7.
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Analysis
by VulDB Data Team • 04/02/2026
The CVE-2024-43240 vulnerability represents a critical improper authentication flaw within the azzaroco Ultimate Membership Pro plugin, specifically impacting versions ranging from the initial release through version 12.7. This vulnerability resides in the authentication mechanism that governs user access to membership features and administrative functionalities within WordPress environments. The flaw allows unauthorized users to bypass legitimate authentication processes and gain access to restricted areas of the membership system, potentially compromising the entire user management infrastructure. Such a weakness fundamentally undermines the security posture of websites utilizing this plugin, as it enables attackers to exploit the system without proper credentials or authorization.
The technical implementation of this authentication bypass stems from inadequate validation of user credentials and session management within the membership plugin's core architecture. Attackers can leverage this vulnerability to access member-only content, modify user permissions, and potentially escalate privileges within the affected WordPress installation. The flaw likely exists in how the plugin handles authentication tokens, session identifiers, or credential verification processes, creating pathways for unauthorized access to administrative panels and membership databases. This vulnerability directly maps to CWE-287, which categorizes improper authentication flaws in software systems, and aligns with ATT&CK technique T1078 for valid accounts and credential access.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it can enable attackers to manipulate membership tiers, modify user accounts, and potentially extract sensitive user data including personal information and payment details. Websites utilizing this plugin may experience data breaches, unauthorized content modifications, and potential compromise of their entire membership ecosystem. The vulnerability affects not only individual user accounts but also the integrity of the membership management system itself, potentially allowing attackers to create new administrator accounts or modify existing ones. Organizations relying on this plugin for membership management face significant risks including reputational damage, regulatory compliance violations, and potential legal consequences from unauthorized data access.
Mitigation strategies for CVE-2024-43240 require immediate attention from system administrators and security teams. The primary recommendation involves upgrading to the latest version of the Ultimate Membership Pro plugin where the authentication flaw has been addressed. Organizations should also implement additional security measures including enhanced monitoring of authentication attempts, implementation of multi-factor authentication for administrative accounts, and regular security audits of membership plugin configurations. Network segmentation and access control measures can help limit the potential damage if exploitation occurs, while regular security scanning should be conducted to identify any remaining vulnerabilities in the membership system. Security teams must also consider implementing web application firewalls and intrusion detection systems to monitor for exploitation attempts targeting this specific authentication bypass vulnerability.