PHP CVE-2025-5712

Immediate actions: (1) Apply vendor patches - contact SourceCodester for CVE-2025-5712 security updates; check official repository/website for patched version (likely 1.0.1 or 2.0); (2) If patch unavailable, implement input validation: whitelist/validate patient parameter to accept only expected formats (numeric IDs, specific alphanumeric patterns); (3) Use prepared statements: replace all direct SQL concatenation with parameterized queries using PHP PDO or mysqli prepared statement APIs (e.g., $stmt = $pdo->prepare('SELECT * FROM appointments WHERE patient_id = ?'); $stmt->execute([$patient])); (4) Apply Web Application Firewall (WAF) rules to detect/block SQL injection patterns in appointment.php requests; (5) Implement principle of least privilege - database user account running queries should have minimal required permissions; (6) Enable SQL error suppression to prevent information leakage through error messages; (7) Conduct database audit for unauthorized access/data exfiltration since POC is public.