CVE-2026-32581 in Mooberry Book Manager Plugin
Summary
by MITRE • 10/06/2026
Subscriber SQL Injection in Mooberry Book Manager 4.16.2 versions.
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Analysis
by VulDB Data Team • 10/06/2026
The vulnerability identified as a subscriber SQL injection flaw within Mooberry Book Manager versions prior to 4.16.2 represents a critical security deficiency that compromises the integrity of the underlying database system. This plugin, widely used for managing book collections and library data in WordPress environments, processes user-supplied input related to subscriber information without adequate sanitization or validation mechanisms. The core technical flaw lies in the improper handling of SQL queries constructed dynamically using unsanitized variables derived from HTTP requests. When an authenticated attacker interacts with specific endpoints designed to manage subscriber details, they can inject malicious Structured Query Language code into these parameters. Because the application fails to properly escape special characters such as single quotes or utilize prepared statements consistently across all execution paths, the injected payload is interpreted by the database engine as part of the original query structure rather than as literal data input.
This architectural weakness allows for a classic blind or error-based SQL injection attack vector, depending on how the application responds to malformed queries and whether error reporting is enabled in the production environment. An attacker can leverage this flaw to manipulate backend database operations beyond the intended scope of subscriber management. By crafting specific payloads, it becomes possible to extract sensitive data stored within the WordPress database, including administrator credentials, session tokens, and other personally identifiable information associated with users or library records. The severity is exacerbated by the fact that many installations operate on shared hosting environments where a successful compromise can lead to lateral movement across multiple sites hosted on the same server infrastructure if privilege separation is not strictly enforced at the operating system level.
From an operational impact perspective, this vulnerability poses significant risks to data confidentiality and integrity. Successful exploitation could result in unauthorized access to administrative accounts through credential harvesting or direct database manipulation that alters book records, subscriber lists, or plugin configurations. In severe cases, attackers might utilize advanced SQL injection techniques such as union-based attacks to dump entire tables from the WordPress database schema. This not only violates user privacy expectations but also undermines trust in the platform’s ability to secure digital assets and personal data. Furthermore, if the underlying MySQL server is configured with excessive privileges or has access to system-level functions like file read capabilities enabled via sql_file_read, the impact could escalate to full remote code execution on the host machine, allowing complete control over the web server environment.
To mitigate this risk, immediate action must be taken by upgrading Mooberry Book Manager to version 4.16.2 or later, where these input validation and query construction issues have been addressed through rigorous sanitization protocols and parameterized queries. Administrators should also ensure that their WordPress installations are fully updated, as core updates often include broader security patches for common vulnerabilities affecting plugins. Implementing a Web Application Firewall can provide an additional layer of defense by detecting and blocking known SQL injection patterns in HTTP traffic before they reach the application logic. Additionally, adhering to the principle of least privilege is crucial; database users should be granted only the minimum permissions necessary for their function, preventing attackers from executing administrative commands even if an injection succeeds. Regular security audits and code reviews focusing on input handling practices are recommended to prevent similar flaws in custom or third-party extensions.
This vulnerability aligns with Common Weakness Enumeration identifier CWE-89, which classifies improper neutralization of special elements used in an SQL command, commonly known as SQL Injection. In the context of the MITRE ATT&CK framework for enterprise security, this flaw facilitates techniques categorized under T1059 Command and Scripting Interpreter or more specifically data exfiltration methods such as T1005 Data from Local System when combined with successful extraction payloads. Understanding these mappings helps organizations prioritize remediation efforts based on standardized threat intelligence models. By addressing the root cause through software updates and reinforcing defensive configurations, administrators can effectively neutralize this attack vector and maintain a secure operational posture for their digital library management systems.