CVE-2026-15537 in Online Book Store System
Summary
by MITRE • 07/13/2026
A security flaw has been discovered in SourceCodester Online Book Store System 1.0. This vulnerability affects unknown code of the file admin/login.php. The manipulation of the argument Username results in sql injection. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.
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Analysis
by VulDB Data Team • 07/13/2026
This vulnerability represents a critical sql injection flaw within the admin/login.php component of SourceCodester Online Book Store System version 1.0. The issue stems from improper input validation where the Username parameter is directly incorporated into sql query construction without adequate sanitization or parameterization measures. This allows malicious actors to manipulate the authentication flow by injecting malicious sql payloads through the Username field, potentially gaining unauthorized access to administrative privileges.
The technical implementation of this vulnerability aligns with common sql injection patterns as classified under CWE-89, which specifically addresses improper neutralization of special elements used in sql commands. The attack vector is particularly dangerous because it operates remotely without requiring local system access or authentication, making it highly exploitable across network boundaries. The fact that public exploit code exists significantly amplifies the risk level, as it eliminates the need for advanced technical skills to execute successful attacks against vulnerable systems.
The operational impact of this vulnerability extends beyond simple unauthorized access, potentially enabling attackers to extract sensitive user data, modify database contents, or even escalate privileges within the application environment. Given that this affects the administrative login functionality, successful exploitation could result in complete system compromise including data theft, service disruption, and potential lateral movement within network infrastructures. The vulnerability affects the core authentication mechanism of the bookstore system, making it a prime target for cybercriminals seeking persistent access to commercial web applications.
Mitigation strategies should prioritize immediate implementation of parameterized queries or prepared statements to eliminate sql injection possibilities in all database interactions. Input validation measures must be strengthened to filter out special characters and sql keywords from user-supplied data, particularly in authentication endpoints. The system should implement proper output encoding and employ web application firewalls to detect and prevent malicious sql payloads. Additionally, regular security assessments and code reviews should be conducted to identify similar vulnerabilities throughout the application codebase. This vulnerability demonstrates the importance of following secure coding practices and adheres to ATT&CK technique T1190 for exploiting remote services through sql injection attacks, highlighting the need for comprehensive defensive measures against such persistent threats in web applications.