CVE-2026-16484 in Class and Exam Timetabling System
Summary
by MITRE • 07/22/2026
A flaw has been found in SourceCodester Class and Exam Timetabling System 1.0. Affected by this vulnerability is an unknown functionality of the file /edit_subjecta.php. This manipulation of the argument ID causes sql injection. The attack can be initiated remotely. The exploit has been published and may be used.
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Analysis
by VulDB Data Team • 07/22/2026
This vulnerability resides within the SourceCodester Class and Exam Timetabling System version 1.0, specifically targeting the /edit_subjecta.php file through improper input validation mechanisms. The flaw represents a classic sql injection vulnerability that occurs when user-supplied data is directly incorporated into sql query construction without adequate sanitization or parameterization. The attack vector exploits the ID argument parameter, allowing malicious actors to manipulate database queries through crafted input sequences that can alter the intended execution flow of the application's backend database operations.
The technical implementation of this vulnerability demonstrates a failure in input validation and output encoding practices that aligns with CWE-89, which specifically addresses sql injection flaws where untrusted data is used in sql commands without proper sanitization. This weakness creates opportunities for attackers to execute arbitrary sql commands against the underlying database system, potentially leading to unauthorized data access, modification, or deletion. The remote exploitation capability means that malicious actors can leverage this vulnerability from external networks without requiring physical access to the target system.
The operational impact of this vulnerability extends beyond simple data theft, as it provides attackers with potential persistence mechanisms and privilege escalation opportunities within the application's database environment. Successful exploitation could enable attackers to extract sensitive information such as user credentials, personal data, or system configuration details that may further compromise the overall security posture. The published exploit availability significantly increases the risk level, as it removes the requirement for advanced technical skills to carry out attacks against vulnerable systems.
Security mitigations should prioritize implementing proper input validation and parameterized query construction practices throughout the application codebase. The recommended approach includes utilizing prepared statements with parameter binding mechanisms that separate sql command structure from data values, thereby preventing malicious input from altering query execution paths. Additionally, implementing proper access controls and least privilege principles for database connections can limit the potential impact of successful exploitation attempts. Regular security code reviews and automated vulnerability scanning should be integrated into development lifecycle processes to identify and remediate similar weaknesses before they can be exploited in production environments. This vulnerability also aligns with ATT&CK technique T1190 which covers exploiting vulnerabilities in applications, emphasizing that such flaws should be addressed through both defensive measures and proactive threat hunting activities within network environments.