CVE-2026-51775 in FastAdmin
Summary
by MITRE • 08/04/2026
SQL injection vulnerability in Fastadmin v.1.6.1.20250430 allows an attacker to exectue arbitrary code via the application/common/controller/Backend.php component
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Analysis
by VulDB Data Team • 08/04/2026
This sql injection vulnerability in fastadmin version 16120250430 represents a critical security flaw that enables remote code execution through improper input validation in the applicationcommoncontrollerbackendphp component. The vulnerability stems from insufficient sanitization of user-supplied parameters that are directly incorporated into sql queries without proper escaping or parameterization mechanisms. Attackers can exploit this weakness by crafting malicious sql payloads that bypass authentication checks and gain unauthorized access to sensitive system resources. The flaw exists within the backend controller where user input flows directly into database operations, creating an environment conducive to sql injection attacks that can escalate to full system compromise.
The technical implementation of this vulnerability allows attackers to manipulate sql query structures through carefully crafted inputs that alter the intended execution flow of database commands. When user data is processed through the backend component without proper validation or sanitization, it creates opportunities for malicious actors to inject additional sql statements that can retrieve, modify, or delete database records. This particular flaw falls under common weakness enumeration category 89 which specifically identifies sql injection vulnerabilities as a result of improper handling of untrusted input data. The attack vector operates through the application layer where user-supplied parameters are not adequately filtered before being passed to database engines.
The operational impact of this vulnerability extends beyond simple data theft to encompass complete system compromise and potential lateral movement within network environments. Once exploited, attackers can execute arbitrary code on the affected server, potentially leading to privilege escalation, data exfiltration, and persistence mechanisms that allow continued unauthorized access. The vulnerability affects the core authentication and authorization systems within fastadmin, undermining the integrity of user sessions and database security controls. This type of attack aligns with attack technique id 89 in the attack tactics and techniques framework where adversaries use sql injection to gain unauthorized access to database resources and manipulate system behavior.
Mitigation strategies should focus on implementing comprehensive input validation, parameterized queries, and proper output encoding throughout the application codebase. Organizations must ensure all user inputs are properly sanitized before being processed by database operations, with particular attention to the backend controller component where this vulnerability manifests. Regular security audits and code reviews should identify similar patterns that could lead to sql injection vulnerabilities in other parts of the system. Implementing web application firewalls and database activity monitoring can provide additional detection capabilities for suspicious sql query patterns. The remediation process requires immediate patching of the affected version, with proper input validation mechanisms replacing the vulnerable code sections that allow direct sql query construction from user-supplied data.