CVE-2026-28408 is a critical security vulnerability identified in the WeGIA web management system developed by LabRedesCefetRJ, specifically affecting versions prior to 3.6.5. The vulnerability arises from the script adicionar_tipo_docs_atendido.php, which does not route requests through the project's central controller and lacks its own authentication and authorization mechanisms. This architectural oversight means that any user, including unauthenticated external actors, can directly access this script via its URL or through HTTP request tools such as Postman. Consequently, attackers can invoke functions intended exclusively for employees without any permission checks. The vulnerability is classified under CWE-862 (Missing Authorization) and CWE-287 (Improper Authentication), highlighting the absence of proper access controls. Exploitation allows attackers to inject unauthorized data in bulk into the application’s backend storage, potentially leading to data corruption, unauthorized data manipulation, and service disruption. The CVSS v3.1 base score of 9.8 reflects the vulnerability’s high impact on confidentiality, integrity, and availability, combined with its ease of exploitation (network vector, no privileges or user interaction required). The issue was publicly disclosed on February 27, 2026, and fixed in WeGIA version 3.6.5. No known exploits have been reported in the wild to date, but the critical nature of this flaw demands immediate remediation by affected organizations.

The impact of CVE-2026-28408 is severe for organizations using WeGIA versions prior to 3.6.5, particularly charitable institutions that rely on this platform to manage sensitive data and internal operations. Unauthorized access to employee-only features can lead to massive unauthorized data injection, resulting in data integrity loss and potential corruption of critical records. Confidential information stored within the system may be exposed or manipulated, undermining trust and compliance with data protection regulations. The ability to perform these actions without authentication or user interaction increases the risk of automated or large-scale attacks. Additionally, the injection of large volumes of data can degrade system performance or cause denial of service, impacting availability. Organizations may face operational disruptions, reputational damage, and legal consequences if sensitive donor or beneficiary data is compromised. Given the critical CVSS score, the vulnerability represents a high-risk threat that could be exploited by attackers to gain persistent unauthorized access and control over the affected systems.

To mitigate CVE-2026-28408, organizations should immediately upgrade WeGIA to version 3.6.5 or later, where the vulnerability has been patched. Until the upgrade can be applied, implement network-level access controls to restrict access to the adicionar_tipo_docs_atendido.php script, such as IP whitelisting or web application firewall (WAF) rules that block unauthorized requests to this endpoint. Conduct thorough code reviews and security testing to ensure that all scripts and endpoints are properly routed through centralized controllers enforcing authentication and authorization. Implement strict role-based access control (RBAC) policies within the application to limit feature access to authorized personnel only. Monitor application logs for unusual or unauthorized access attempts targeting this script or related endpoints. Employ intrusion detection and prevention systems (IDPS) to detect and block exploitation attempts. Educate developers on secure coding practices to prevent missing authorization vulnerabilities in future releases. Finally, maintain regular backups of application data to enable recovery in case of data corruption or injection attacks.