PHP EUVD-2025-16818

Immediate actions: (1) If still in use, disable or restrict network access to the e-pass management system until patched; (2) Implement Web Application Firewall (WAF) rules to block SQL injection payloads in the searchdata parameter (e.g., blocking common keywords: UNION, SELECT, DROP, OR 1=1); (3) Enable SQL query logging and monitor for suspicious patterns. Long-term remediation: (1) Upgrade to a patched version if available from PHPGurukul—check their official website or GitHub repository for updates beyond 1.0; (2) If no patch exists, migrate to an actively maintained alternative e-pass management system; (3) If patching in-place, apply input validation: use prepared statements with parameterized queries (mysqli_prepare or PDO with bound parameters), implement whitelist validation for searchdata parameter, and enforce principle of least privilege on database user (remove administrative database rights). Code-level fix: Replace direct SQL concatenation with parameterized queries, e.g., $stmt = $mysqli->prepare('SELECT * FROM epasses WHERE name LIKE ?'); $stmt->bind_param('s', '%'.$_GET['searchdata'].'%'); $stmt->execute();