CVE-2026-1473 identifies a critical SQL injection vulnerability classified under CWE-89 in the Quatuor Evaluación de Desempeño (EDD) application, a performance evaluation tool developed by Gabinete Técnico de Programación. The vulnerability is an out-of-band (OOB) SQL injection, which allows attackers to exploit the 'Id_usuario' parameter in the '/evaluacion_competencias_evalua.aspx' page. Unlike traditional in-band SQLi, OOB SQLi enables data exfiltration through external channels such as DNS or HTTP requests initiated by the database server, bypassing direct response filtering by the application. This attack vector can be leveraged without any authentication or user interaction, making it highly accessible to remote attackers. The vulnerability affects all versions of the product, indicating a systemic flaw in input handling and query construction. The CVSS 4.0 score of 9.3 reflects the vulnerability's ease of exploitation (network vector, no privileges required), and its severe impact on confidentiality and integrity, with limited impact on availability. The absence of patches or known exploits in the wild suggests this is a newly disclosed vulnerability, but the risk remains high due to the critical nature of the flaw and the sensitive data typically managed by performance evaluation systems. The vulnerability could lead to unauthorized disclosure of employee data, evaluation results, and other confidential information stored in the backend database, potentially violating data protection laws and damaging organizational trust.

For European organizations, the exploitation of CVE-2026-1473 could result in significant data breaches involving sensitive employee performance data, personal identifiers, and possibly other confidential business information stored within the EDD application. Such breaches could lead to violations of the EU General Data Protection Regulation (GDPR), resulting in substantial fines and reputational damage. The confidentiality compromise could also facilitate further attacks such as social engineering or insider threats. Since the vulnerability allows remote exploitation without authentication, attackers could operate from outside the organization, increasing the attack surface. The integrity of performance data could be undermined if attackers modify queries or inject malicious payloads, affecting decision-making processes and employee evaluations. Availability impact is limited but could occur if attackers leverage the vulnerability to cause database errors or resource exhaustion. Overall, the threat poses a critical risk to organizations relying on Quatuor's EDD for human resources and performance management, especially in sectors with strict compliance requirements such as finance, healthcare, and government.

To mitigate CVE-2026-1473, organizations should immediately implement strict input validation and sanitization on the 'Id_usuario' parameter to prevent injection of malicious SQL commands. Employing parameterized queries or prepared statements is essential to separate code from data and eliminate injection vectors. Since no official patches are currently available, organizations should consider deploying Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection patterns, especially those targeting the vulnerable endpoint. Monitoring outbound network traffic for unusual DNS or HTTP requests originating from the database server can help detect OOB SQLi attempts. Restricting database user permissions to the minimum necessary can limit the impact of successful exploitation. Conducting thorough code reviews and security testing of the EDD application is recommended to identify and remediate similar vulnerabilities. Organizations should also prepare incident response plans specific to data exfiltration scenarios and ensure compliance teams are aware of the potential GDPR implications. Finally, maintain close communication with the vendor for forthcoming patches and updates.