CVE-2026-51821 in Video Conference System
Summary
by MITRE • 07/14/2026
SQL Injection vulnerability in Shenzhou Shihan Video Conference System v.1.0 allows a remote attacker to execute arbitrary code via the /user/getUserLogin endpoint
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Analysis
by VulDB Data Team • 07/14/2026
The Shenzhou Shihan Video Conference System version 1.0 contains a critical SQL injection vulnerability that exposes the system to remote code execution attacks through the /user/getUserLogin endpoint. This vulnerability represents a severe security flaw that violates multiple security principles and can be exploited by malicious actors without authentication. The system's failure to properly sanitize user input in the login endpoint creates an attack surface where crafted malicious payloads can manipulate the underlying database query structure.
This vulnerability falls under CWE-89 which specifically addresses SQL injection flaws, and aligns with ATT&CK technique T1190 for exploiting vulnerabilities in software applications. The flaw occurs when user-supplied credentials are directly concatenated into SQL query strings without proper parameterization or input validation mechanisms. Attackers can manipulate the login process by injecting malicious SQL syntax that bypasses authentication controls and potentially escalates privileges within the database layer.
The operational impact of this vulnerability extends beyond simple unauthorized access to include full database compromise, data exfiltration, and potential system takeover. Remote attackers can exploit this weakness to extract sensitive user credentials, conference records, system configurations, and other confidential information stored in the backend database. The attack vector requires no prior authentication and can be executed through standard web requests, making it particularly dangerous for enterprise video conferencing environments where sensitive business communications occur.
Security mitigation strategies should focus on implementing proper input validation, parameterized queries, and robust output encoding throughout the application codebase. Organizations must ensure that all user inputs are properly sanitized before being processed by database engines and that the system employs prepared statements or stored procedures to prevent malicious SQL code injection. Additionally, network segmentation, web application firewalls, and regular security assessments should be implemented to detect and prevent exploitation attempts. The vulnerability underscores the importance of secure coding practices and demonstrates how seemingly simple authentication endpoints can become critical attack vectors when proper input validation controls are absent.