CVE-2026-81287 in Charitable Plugin
Summary
by MITRE • 08/31/2026
Subscriber SQL Injection in Charitable <= 1.8.12.1 versions.
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Analysis
by VulDB Data Team • 08/31/2026
The vulnerability identified as a subscriber-level SQL injection within the charitable plugin, specifically affecting versions up to and including 1.8.12.1, represents a critical security flaw that compromises the integrity of the underlying database infrastructure. This type of attack vector is particularly dangerous because it allows an authenticated user with low privileges, such as a standard subscriber or contributor role in WordPress environments, to manipulate SQL queries executed by the application. The root cause typically lies in insufficient input validation and sanitization mechanisms when processing data submitted through forms or API endpoints that are accessible to lower-privileged users. Instead of properly escaping special characters like single quotes or semicolons, the application directly concatenates user-supplied input into database query strings. This oversight enables an attacker to inject arbitrary SQL commands that alter the logic of the original queries, potentially bypassing authentication checks, extracting sensitive data from other tables, modifying existing records, or even executing administrative functions depending on the privileges granted to the database account used by the web application.
From a technical perspective, this vulnerability aligns with Common Weakness Enumeration (CWE) ID 89, which categorizes Improper Neutralization of Special Elements used in an SQL Command, commonly known as SQL Injection. The exploitation process generally involves identifying input fields that are processed without adequate filtering and then crafting malicious payloads designed to terminate the current query context and initiate new commands. For instance, an attacker might inject a payload such as ' OR 1=1 -- which could result in returning all records from a targeted table if the application logic is flawed enough to execute the modified statement. In more sophisticated scenarios involving blind SQL injection techniques, attackers can use boolean-based or time-based inference methods to extract data character by character without seeing immediate output on the screen. This capability significantly lowers the barrier for exploitation, allowing even less experienced threat actors to compromise systems that contain this vulnerable plugin version.
The operational impact of exploiting a subscriber-level SQL injection is severe and multifaceted. Initially, it leads to unauthorized access to sensitive information stored in the database, including user credentials, personal identifiable information (PII), financial records if e-commerce features are enabled, or administrative configuration settings. Beyond data exfiltration, successful exploitation can lead to complete system compromise. If the database server runs with elevated privileges and allows file operations, an attacker might write web shells directly onto the server's filesystem, gaining persistent remote code execution capabilities. This effectively turns a simple plugin vulnerability into a full-scale infrastructure breach. Furthermore, such attacks contribute to broader security incidents including data breaches that violate regulatory compliance standards like GDPR or HIPAA, resulting in significant legal and reputational damage for organizations relying on this software. The presence of low-privilege entry points for high-impact vulnerabilities also indicates poor adherence to the principle of least privilege, suggesting deeper architectural weaknesses within the application's design.
To mitigate this vulnerability, immediate action is required by upgrading the charitable plugin to a version newer than 1.8.12.1 where these input validation issues have been addressed by the developers. In addition to patching, organizations should implement Web Application Firewalls (WAFs) configured with rulesets specifically tuned to detect and block SQL injection patterns in HTTP requests. It is also crucial to enforce strict role-based access control policies, ensuring that sensitive database operations are not exposed through endpoints accessible to low-privilege users unless absolutely necessary for functionality. Developers should adopt parameterized queries or prepared statements as the standard method for all database interactions, which inherently prevents SQL injection by separating code from data at the driver level rather than relying on string manipulation in application logic. Regular security audits and static analysis of source code can further help identify similar vulnerabilities before they are deployed into production environments.
In terms of threat intelligence frameworks, this vulnerability is relevant to MITRE ATT&CK techniques related to SQL injection attacks used for credential dumping or data exfiltration. Specifically, it maps to T1190 Exploit Public-Facing Application and potentially T1078 Valid Accounts if the attacker leverages stolen credentials obtained through previous breaches to access these low-privilege interfaces. Understanding this mapping helps security operations centers prioritize detection rules based on behavioral indicators associated with SQL injection attempts, such as unusual database query patterns or spikes in error responses from application servers. Continuous monitoring and logging of database activity are essential for detecting successful exploitation attempts that may have bypassed preventive controls like WAFs. By combining immediate patching with robust defensive measures and ongoing monitoring, organizations can effectively neutralize the risk posed by this specific vulnerability within their WordPress ecosystems.