CVE-2026-13572: SQL Injection in itsourcecode Hospital Management System 1.0 – Billing Module Risk

Technical summary

CVE-2026-13572 is a SQL injection flaw (CWE-89) combined with improper neutralization of special elements in input (CWE-74) affecting the billing record insertion function. The vulnerability stems from insufficient input validation on the patientid parameter, allowing an authenticated attacker to inject SQL syntax and execute unintended database operations. The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L) indicates network accessibility with low attack complexity, but requires prior authentication. Impact is confined to the affected system without scope expansion.

Business impact

Healthcare organizations running this system face potential patient data exposure, billing record tampering, and service disruption. An internal actor or compromised account could manipulate patient billing information, extract protected health information (PHI), or corrupt critical records. Regulatory consequences under HIPAA may apply if patient data is accessed or modified. Operational integrity of billing workflows and financial reporting is at risk.

Affected systems

itsourcecode Hospital Management System version 1.0 is confirmed vulnerable. The /insertbillingrecord.php endpoint and any associated billing workflows are directly impacted. Organizations must audit their deployment status and verify whether they run this specific version.

Exploitability

The vulnerability requires authenticated access (login credentials), which limits exposure compared to unauthenticated flaws. However, attack complexity is low once that threshold is crossed—standard SQL injection techniques apply without special bypass requirements. Public disclosure and available tooling increase the likelihood of opportunistic exploitation by insiders or credential-compromised accounts. The three-week window between publication and current date suggests active reconnaissance may already be underway.

Remediation

Immediate action is recommended. Implement input validation and parameterized queries (prepared statements) for the patientid parameter and all user inputs in /insertbillingrecord.php. If a patched version of itsourcecode Hospital Management System is available from the vendor, upgrade immediately. As a temporary compensating control, restrict network access to the billing module and enforce strong authentication policies. Conduct a database audit for unauthorized modifications within the timeframe the system has been exposed.

Patch guidance

Contact itsourcecode for available updates or security patches for Hospital Management System 1.0. Verify patch applicability against your exact deployment configuration before deployment. Test patches in a non-production environment first, given the critical nature of billing systems. If no patch is available from the vendor, consider migration to a maintained alternative or implement strict network segmentation and input filtering as interim controls.

Detection guidance

Monitor /insertbillingrecord.php for HTTP requests containing SQL keywords (UNION, SELECT, DROP, INSERT, etc.) in the patientid parameter. Log and alert on unusual database activity from the application's database account, including unexpected queries or modifications to billing records. Review authentication logs for failed login attempts followed by successful access to the billing module. Implement Web Application Firewall (WAF) rules to block common SQL injection payloads targeting this endpoint.

Why prioritize this

Although CVSS 6.3 (MEDIUM) reflects the authentication requirement, the public disclosure status, healthcare context (PHI at risk), and low attack complexity elevate practical risk. The billing system's criticality to operations and financial integrity, combined with potential regulatory exposure, justifies urgent patching. Compromise of this function directly affects patient records and organizational compliance posture.

Risk score, explained

CVSS 6.3 reflects a confined-scope SQL injection requiring login credentials (PR:L), but with full read/write/delete impact to the affected application's data (C:L/I:L/A:L) and network accessibility (AV:N). The score does not account for the healthcare regulatory context, public exploit availability, or business criticality of billing systems—factors that should elevate remediation urgency in your risk assessment.

Frequently asked questions