This vulnerability affects SourceCodester Class and Exam Timetabling System 1.0. It arises from improper sanitization of the 'sy' parameter in the /archive1.php file, enabling remote attackers to inject SQL commands. The vulnerability does not require privileges or user interaction and has low vector complexity. The CVSS 4.0 vector indicates partial impact on confidentiality, integrity, and availability. No vendor advisory or patch information is provided, and the exploit code is publicly available.

Successful exploitation could allow an attacker to execute arbitrary SQL queries on the backend database, potentially leading to unauthorized data access or modification. The impact is rated medium due to partial compromise of confidentiality, integrity, and availability. However, no confirmed active exploitation in the wild has been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider restricting access to the vulnerable endpoint and applying web application firewall (WAF) rules to detect and block SQL injection attempts targeting the 'sy' parameter. Monitor vendor channels for updates and patches.