CVE-2026-7741 in Online Classroom
Summary
by MITRE • 05/04/2026
A vulnerability was detected in CodeAstro Online Classroom 1.0. Impacted is an unknown function of the file /OnlineClassroom/studentlogin. Performing a manipulation of the argument sid results in sql injection. Remote exploitation of the attack is possible. The exploit is now public and may be used.
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Analysis
by VulDB Data Team • 05/09/2026
The vulnerability identified in CodeAstro Online Classroom 1.0 represents a critical security flaw that exposes the system to remote code execution through SQL injection attacks. This vulnerability specifically affects the studentlogin functionality within the application's codebase, where the sid parameter serves as an entry point for malicious input manipulation. The flaw resides in the application's failure to properly sanitize or validate user-supplied input before incorporating it into database queries, creating an exploitable condition that allows attackers to manipulate the underlying database structure.
The technical implementation of this vulnerability stems from improper input validation practices within the sid parameter handling mechanism. When a user submits a sid value through the studentlogin endpoint, the application directly incorporates this parameter into SQL query construction without adequate sanitization measures. This design flaw aligns with CWE-89 which specifically addresses SQL injection vulnerabilities, where insufficient validation of user input leads to unauthorized database access. The vulnerability's classification as a remote exploit means that attackers do not require physical access to the system or local network privileges to leverage this weakness, making it particularly dangerous for web applications.
The operational impact of this vulnerability extends beyond simple data theft or modification, as it provides attackers with potentially full control over the application's database backend. Successful exploitation could enable unauthorized users to extract sensitive student information, modify enrollment records, access administrative credentials, or even escalate privileges within the system. This risk is amplified by the fact that the exploit is publicly available, meaning that any malicious actor with basic knowledge of SQL injection techniques can potentially compromise the system. The vulnerability affects the core authentication and authorization mechanisms of the online classroom platform, potentially undermining the entire security posture of the educational institution using this software.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term architectural improvements. The primary solution involves implementing proper input validation and parameterized queries throughout the application's database interaction layers. All user-supplied parameters, particularly those used in authentication flows like sid, should undergo strict sanitization and validation before being processed. Organizations should implement prepared statements or parameterized queries to prevent malicious SQL code from being executed. Additionally, the system should enforce proper access controls and implement input length restrictions to limit potential exploitation vectors. Regular security auditing and penetration testing should be conducted to identify similar vulnerabilities in other application components. The implementation of web application firewalls and intrusion detection systems can provide additional protective layers against exploitation attempts. This vulnerability demonstrates the critical importance of secure coding practices and proper input validation as outlined in the OWASP Top Ten security risks, particularly the SQL injection category that remains one of the most prevalent and dangerous web application threats.