CVE-2025-0318 in Ultimate Member Plugin
Summary
by MITRE • 01/18/2025
The Ultimate Member – User Profile, Registration, Login, Member Directory, Content Restriction & Membership Plugin plugin for WordPress is vulnerable to Information Exposure in all versions up to, and including, 2.9.1 through different error messages in the responses. This makes it possible for unauthenticated attackers to exfiltrate data from wp_usermeta table.
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Analysis
by VulDB Data Team • 02/26/2025
The vulnerability identified as CVE-2025-0318 affects the Ultimate Member WordPress plugin, specifically targeting versions up to and including 2.9.1. This represents a critical information exposure flaw that stems from improper error handling within the plugin's response mechanisms. The vulnerability manifests through verbose error messages that inadvertently reveal sensitive database information to unauthenticated attackers, creating a significant security risk for WordPress installations utilizing this plugin. The flaw directly impacts the plugin's user profile, registration, login, and membership functionality components, making it particularly dangerous for sites that rely heavily on user authentication and membership management features.
The technical exploitation of this vulnerability occurs through carefully crafted requests that trigger the plugin to return detailed error responses containing database schema information. These error messages specifically expose data from the wp_usermeta table, which contains crucial user metadata including authentication tokens, profile information, and potentially sensitive personal data. The vulnerability is classified under CWE-209, which addresses the exposure of error information to unauthorized users, and aligns with ATT&CK technique T1213.002 for Data from Information Repositories. Attackers can leverage this exposure to enumerate user accounts, extract authentication-related metadata, and potentially gain insights into user behavior patterns that could facilitate further attacks.
The operational impact of this vulnerability extends beyond simple data leakage, as it enables attackers to build comprehensive profiles of users within the system. The exposure of wp_usermeta table contents provides attackers with information about user roles, capabilities, and potentially sensitive personal details stored in the WordPress database. This information can be used for targeted attacks, credential stuffing attempts, or social engineering operations. The vulnerability affects all versions up to 2.9.1, indicating that a significant portion of users may be impacted, particularly those who have not updated their plugin installations. Organizations running WordPress sites with Ultimate Member plugin are at risk of unauthorized data access, potential account compromise, and violation of data protection regulations.
Mitigation strategies for CVE-2025-0318 require immediate attention through plugin version updates to the latest secure release. System administrators should implement comprehensive monitoring of error logs to detect potential exploitation attempts and ensure that error handling is properly configured to prevent information leakage. The WordPress security community should consider implementing additional security headers and response sanitization measures to prevent similar vulnerabilities in other plugins. Organizations should conduct thorough vulnerability assessments of their WordPress installations to identify other potentially affected plugins and ensure that all security updates are applied promptly. The vulnerability demonstrates the critical importance of proper error handling in web applications and the need for comprehensive security testing of third-party plugins before deployment in production environments.