The vulnerability CVE-2026-31896 affects the WeGIA web management system, specifically versions before 3.6.6. The root cause is improper neutralization of special elements in SQL commands (CWE-89), resulting from the use of PHP's extract($_REQUEST) function in the remover_produto_ocultar.php script. This function imports all HTTP request parameters into local variables without validation, which are then directly concatenated into SQL queries executed by PDO::query. This unsafe coding practice enables attackers to inject malicious SQL payloads. Exploitation does not require authentication or user interaction, making it highly accessible. Attackers can perform arbitrary SQL commands, including reading sensitive data, modifying or deleting records, or causing denial of service via time-based SQL delays. The vulnerability is critical due to its impact on confidentiality, integrity, and availability, and the ease of exploitation. The vendor fixed the issue in version 3.6.6 by presumably implementing proper input validation and parameterized queries to prevent injection.

This vulnerability poses a severe risk to organizations using WeGIA versions prior to 3.6.6, especially charitable institutions relying on this software for managing sensitive data. Successful exploitation can lead to unauthorized disclosure of confidential information, data tampering, or complete denial of service, potentially disrupting critical operations. Given the lack of authentication requirements, attackers can exploit this remotely and anonymously, increasing the threat surface. The impact extends to data privacy violations, regulatory non-compliance, reputational damage, and operational downtime. Organizations may face financial losses and legal consequences if sensitive donor or beneficiary data is exposed or corrupted. The critical CVSS score reflects the broad and severe impact on confidentiality, integrity, and availability.

Organizations should immediately upgrade WeGIA to version 3.6.6 or later, where this vulnerability is patched. If immediate upgrade is not feasible, implement web application firewall (WAF) rules to detect and block SQL injection patterns targeting the vulnerable script. Review and restrict access to the remover_produto_ocultar.php script, limiting it to trusted users or IP addresses. Conduct thorough input validation and sanitization on all user-supplied data, avoiding the use of extract($_REQUEST) or similar unsafe functions. Employ parameterized queries or prepared statements consistently throughout the application to prevent injection. Regularly audit and monitor database logs for suspicious queries or anomalies indicative of exploitation attempts. Additionally, implement network segmentation and least privilege principles to minimize potential damage from a successful attack.