CVE-2026-16131: Hospital Management System SQLi Flaw

CVE-2026-16131 Overview

CVE-2026-16131 is a SQL injection vulnerability affecting itsourcecode Hospital Management System 1.0. The flaw resides in the /prescriptionrecord.php script, where the delid parameter is passed directly into a database query without proper sanitization. Attackers can manipulate this parameter to inject arbitrary SQL statements against the backend database.

The issue is remotely exploitable and requires only low-level privileges. A public exploit has been disclosed, increasing the likelihood of opportunistic abuse against exposed installations. The weakness is classified under [CWE-74] (Improper Neutralization of Special Elements in Output Used by a Downstream Component).

Critical Impact
Remote attackers with low privileges can inject SQL commands through the delid parameter of /prescriptionrecord.php, potentially exposing or modifying patient and prescription data.

Affected Products

itsourcecode Hospital Management System 1.0
/prescriptionrecord.php script within the application
Backend database accessed through the delid parameter

Discovery Timeline

2026-07-18 - CVE-2026-16131 published to NVD
2026-07-21 - Last updated in NVD database

Technical Details for CVE-2026-16131

Vulnerability Analysis

The vulnerability exists in the prescription record management functionality of itsourcecode Hospital Management System 1.0. When a user submits a delete request through /prescriptionrecord.php, the application accepts the delid parameter from the HTTP request and concatenates it into a SQL query without parameterization or input validation.

Because the query is constructed dynamically, an attacker can append conditional clauses, UNION SELECT statements, or stacked queries to alter query logic. This enables extraction of arbitrary rows from the database, including sensitive patient and prescription records. Depending on database privileges, an attacker may also modify or delete data.

Exploitation requires authentication at a low privilege tier, which is typical for hospital staff or self-registered users in this application class. Public disclosure of the exploit lowers the technical barrier for abuse. The EPSS probability for exploitation is 0.2%.

Root Cause

The root cause is missing input neutralization on the delid parameter before it reaches the database driver. The application does not use prepared statements or parameterized queries, and it does not enforce a numeric type check on delid, which should be an integer identifier. This is a textbook injection weakness described by [CWE-74].

Attack Vector

The attack vector is network-based over HTTP or HTTPS. An authenticated attacker sends a crafted request to /prescriptionrecord.php with a malicious delid value. No user interaction is required beyond the attacker's own request submission. See the VulDB entry for CVE-2026-16131 and the GitHub issue discussion for further technical context.

Detection Methods for CVE-2026-16131

Indicators of Compromise

HTTP requests to /prescriptionrecord.php containing SQL metacharacters such as single quotes, UNION, SELECT, --, or ; within the delid parameter
Unexpected non-numeric values in the delid query string parameter
Database error responses returned to clients following requests to prescription record endpoints
Anomalous volume of DELETE or SELECT operations originating from the web application account

Detection Strategies

Deploy web application firewall (WAF) rules that inspect the delid parameter for SQL syntax and reject non-integer values
Enable database query logging and alert on queries referencing prescription tables that include tautologies such as OR 1=1
Correlate authentication logs with suspicious query patterns to attribute injection attempts to specific accounts

Monitoring Recommendations

Monitor outbound data volumes from the database server to detect bulk exfiltration triggered by UNION-based extraction
Track HTTP 500 responses from /prescriptionrecord.php as potential probing indicators
Review access logs for repeated requests to prescription endpoints from a single source IP within short time windows

How to Mitigate CVE-2026-16131

Immediate Actions Required

Restrict network access to the Hospital Management System to trusted internal networks or VPN users until a fix is applied
Audit accounts with access to /prescriptionrecord.php and disable unused or default credentials
Enable WAF signatures targeting SQL injection in the delid parameter
Back up the database and preserve web server logs for forensic review

Patch Information

No vendor patch has been published for itsourcecode Hospital Management System 1.0 at the time of NVD publication. Operators should track the itsourcecode project page for any updated release. In the absence of a vendor patch, code-level remediation requires replacing dynamic SQL concatenation in /prescriptionrecord.php with prepared statements and enforcing an integer cast on the delid parameter.

Workarounds

Modify /prescriptionrecord.php to cast delid to an integer using intval($_REQUEST['delid']) before use in any query
Replace inline query construction with PDO or MySQLi prepared statements that bind delid as a typed parameter
Apply least-privilege permissions to the database account used by the application, removing DROP and ALTER rights
Deploy a reverse proxy rule that blocks non-numeric values for the delid query parameter

bash

# Example nginx rule to reject non-numeric delid values
location /prescriptionrecord.php {
    if ($arg_delid !~ ^[0-9]+$) {
        return 400;
    }
    include fastcgi_params;
    fastcgi_pass unix:/var/run/php-fpm.sock;
}