CVE-2026-3021 is a NoSQL injection vulnerability classified under CWE-943, indicating improper neutralization of special elements in data query logic within the Wakyma web application. The vulnerability specifically affects the endpoint vets.wakyma.com/centro/equipo/empleado, where an authenticated user can craft a specially altered GET request to inject NoSQL commands. This injection flaw allows unauthorized enumeration of sensitive employee data stored in the backend NoSQL database. Unlike traditional SQL injection, NoSQLi targets databases like MongoDB or CouchDB that use JSON-like query structures. The root cause is insufficient sanitization or validation of input parameters before incorporating them into NoSQL queries, enabling attackers to manipulate query logic. The vulnerability affects all versions of the Wakyma application, indicating a systemic issue in input handling. The CVSS 4.0 vector (AV:N/AC:L/PR:L/UI:N/VC:H/VI:N/VA:N) highlights that the attack is remotely exploitable over the network, requires low complexity, and only low-level privileges, but no user interaction. The impact is high on confidentiality, as sensitive employee information can be enumerated, but integrity and availability are not affected. No patches or fixes have been published yet, and no public exploits are known, but the vulnerability poses a significant risk if weaponized. Organizations relying on Wakyma should urgently assess exposure and implement compensating controls.

The primary impact of CVE-2026-3021 is the unauthorized disclosure of sensitive employee data through NoSQL injection attacks. This can lead to privacy violations, regulatory non-compliance (e.g., GDPR, HIPAA), and reputational damage. Attackers with low-level authenticated access can escalate their information gathering capabilities, potentially facilitating further attacks such as social engineering or insider threats. Since the vulnerability does not affect integrity or availability, direct system disruption or data manipulation is less likely. However, the confidentiality breach alone can have severe consequences, especially for organizations handling sensitive personnel records. The lack of patches increases the window of exposure, and if exploited in the wild, could lead to widespread data leaks. Organizations in sectors like healthcare, government, finance, and large enterprises with extensive employee databases are particularly at risk. The vulnerability also raises concerns about the security posture of NoSQL-based applications and the need for secure coding practices.

To mitigate CVE-2026-3021, organizations should implement strict input validation and sanitization on all parameters accepted by the vulnerable endpoint, ensuring that special NoSQL operators or commands cannot be injected. Employ parameterized queries or prepared statements specific to the NoSQL database in use to separate code from data. Enforce the principle of least privilege by restricting user permissions to only necessary data access, minimizing the impact of compromised credentials. Monitor and log access to the affected endpoint for anomalous query patterns indicative of injection attempts. Conduct thorough code reviews and security testing focused on NoSQL injection vectors. Until an official patch is released, consider deploying a Web Application Firewall (WAF) with custom rules to detect and block NoSQL injection payloads targeting the endpoint. Educate developers on secure NoSQL coding practices and the risks of improper input handling. Finally, maintain an incident response plan to quickly address any detected exploitation attempts.