Critical Vulnerability Information 1. Lack of Security Checks Code Lines: 18-19 Issue: This code prevents direct access, but it should also include user permission checks for enhanced security. 2. Potential SQL Injection Code Lines: 392-395 Issue: The parameter is used without sufficient validation, potentially leading to SQL injection. 3. Insufficient Permission Checks Code Lines: 604-607 Issue: The permission check for deletion operations is not strict enough, which may allow unauthorized deletions. 4. Improper Handling of Frontend Input Code Lines: 132-137 Issue: Input data lacks sufficient filtering and validation, potentially enabling XSS or injection attacks. These vulnerabilities should be addressed by implementing stricter input validation, enhancing permission checks, and adopting proper error handling mechanisms.