CVE-2026-4243 in La Nacion App
Summary
by MITRE • 03/16/2026
A weakness has been identified in La Nacion App 10.2.25 on Android. This impacts an unknown function of the file source/app/lanacion/clublanacion/BuildConfig.java of the component app.lanacion.activity. Executing a manipulation of the argument API_KEY_WEBSOCKET_CV can lead to unprotected storage of credentials. The attack can only be executed locally. A high complexity level is associated with this attack. The exploitability is said to be difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 03/21/2026
The vulnerability identified in La Nacion App version 10.2.25 presents a critical security flaw within the Android mobile application's credential handling mechanisms. This weakness specifically targets the BuildConfig.java file located at source/app/lanacion/clublanacion/ within the app.lanacion.activity component. The vulnerability stems from improper handling of the API_KEY_WEBSOCKET_CV parameter, which when manipulated allows for unprotected storage of sensitive credentials. The flaw represents a significant deviation from established security practices and demonstrates poor implementation of secure coding principles.
The technical exploitation of this vulnerability requires local execution capabilities and involves manipulation of the API_KEY_WEBSOCKET_CV argument within the application's build configuration. This type of attack vector falls under the category of insecure data storage as defined by CWE-312, where sensitive information is stored without adequate protection mechanisms. The high complexity level associated with this attack indicates that while the exploit is technically feasible, it requires specialized knowledge and resources to execute successfully. The difficulty of exploitation suggests that the attack surface is limited but potentially dangerous when executed by threat actors with sufficient technical expertise.
The operational impact of this vulnerability extends beyond simple credential exposure, as it could enable unauthorized access to websocket communications and potentially compromise user data. The fact that this exploit has been made publicly available represents a significant risk to the application's user base and the organization's security posture. The lack of vendor response to early disclosure attempts creates additional concern, as it suggests either inadequate security monitoring or potential delays in addressing critical vulnerabilities. This scenario aligns with ATT&CK technique T1552.001 for unsecured credentials and T1078.004 for legitimate credentials, where attackers could leverage exposed API keys to maintain persistent access to backend services.
The vulnerability's exposure through the BuildConfig.java file indicates a fundamental flaw in the application's security architecture, where sensitive configuration parameters are not properly obfuscated or protected during the application build process. This represents a failure in the principle of least privilege and secure configuration management, as credentials that should remain protected are stored in a manner that makes them accessible to local manipulation. The unprotected storage of credentials directly violates security best practices established by NIST SP 800-53 and ISO/IEC 27001 standards, which mandate appropriate protection mechanisms for sensitive information.
Mitigation strategies should focus on implementing proper credential management practices including secure key storage mechanisms, obfuscation of sensitive parameters, and regular security audits of build configurations. The application should employ secure storage solutions such as Android Keystore or hardware-backed key storage for sensitive information. Additionally, the development team should implement comprehensive security testing including static code analysis and dynamic security assessments to identify similar vulnerabilities in other application components. Regular security updates and patch management procedures should be established to address such vulnerabilities promptly and prevent exploitation by malicious actors.