CVE-2026-13531: Hospital Management System SQLi Flaw

CVE-2026-13531 Overview

CVE-2026-13531 is a SQL injection vulnerability in itsourcecode Hospital Management System 1.0. The flaw resides in the /department.php script, where the editid parameter is passed to a database query without proper sanitization. An authenticated remote attacker can manipulate this parameter to inject arbitrary SQL statements. A public exploit has been released, increasing the likelihood of opportunistic attacks against exposed installations. The vulnerability is tracked 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 editid parameter in /department.php, potentially exposing or modifying patient and hospital records stored in the backend database.

Affected Products

itsourcecode Hospital Management System 1.0
Vulnerable file: /department.php
Vulnerable parameter: editid

Discovery Timeline

2026-06-29 - CVE-2026-13531 published to NVD
2026-06-29 - Last updated in NVD database

Technical Details for CVE-2026-13531

Vulnerability Analysis

The vulnerability exists in the /department.php endpoint of itsourcecode Hospital Management System 1.0. The application accepts the editid request argument and concatenates it directly into a SQL query executed against the backend database. Because no parameterized queries or input validation are applied, attacker-controlled input alters the structure of the SQL statement.

Successful injection can be used to read arbitrary table contents, modify records, or, depending on database privileges, execute administrative operations. The vulnerability is classified under [CWE-74], covering improper neutralization of special elements. Exploitation requires only a low-privileged authenticated session and no user interaction.

Root Cause

The root cause is unsafe SQL query construction. The editid argument is embedded into a query string without prepared statements or escaping. Any single quote, comment sequence, or SQL keyword supplied by the client is interpreted as part of the executed statement, allowing attackers to break out of the intended query context.

Attack Vector

The attack is performed remotely over the network against the web application. An attacker sends a crafted HTTP request to /department.php with a malicious editid value containing SQL syntax. Public proof-of-concept material is referenced in the GitHub issue for CVE-2026-13531 and the VulDB entry for CVE-2026-13531.

No verified code examples are available. The vulnerability manifests when the editid GET parameter is appended into a SQL statement inside /department.php. Refer to the linked advisories for reproduction details.

Detection Methods for CVE-2026-13531

Indicators of Compromise

HTTP requests to /department.php with unusual characters in the editid parameter, such as single quotes, UNION, SELECT, --, or /* sequences.
Web server or database logs showing SQL syntax errors originating from requests targeting department.php.
Unexpected database read or write operations against hospital records shortly after requests to the affected endpoint.

Detection Strategies

Deploy web application firewall (WAF) rules that inspect the editid parameter for SQL metacharacters and known injection payloads.
Enable database query logging and alert on syntactically invalid queries or queries containing tautologies such as OR 1=1.
Correlate authenticated web sessions with anomalous query volume or row counts returned to a single user.

Monitoring Recommendations

Monitor access logs for repeated requests to /department.php from a single source with varying editid values.
Track outbound data volume from the database host to detect large-scale extraction attempts.
Alert on new administrative or high-privilege database operations executed by the web application service account.

How to Mitigate CVE-2026-13531

Immediate Actions Required

Restrict network access to the Hospital Management System to trusted internal networks or VPN users only.
Review authentication logs and disable any suspicious low-privileged accounts that may be used for exploitation.
Deploy a WAF rule to block SQL metacharacters in the editid parameter of /department.php.

Patch Information

No official vendor patch is referenced in the CVE data at the time of publication. Operators should track updates on the IT Source Code blog and the VulDB entry for CVE-2026-13531. Until a fix is available, apply the code-level workaround of replacing string concatenation with parameterized queries in department.php.

Workarounds

Modify department.php to cast editid to an integer before use, for example using intval($_GET['editid']) in PHP.
Replace inline SQL with prepared statements using PDO or MySQLi bound parameters.
Enforce least-privilege database accounts so the application cannot perform administrative queries even if injection succeeds.

bash

# Configuration example: block obvious SQL injection payloads in editid via ModSecurity
SecRule ARGS:editid "@rx (?i)(union(\s|/\*.*\*/)+select|--|;|'|\"|/\*|\*/|or\s+1=1)" \
    "id:1013531,phase:2,deny,status:403,msg:'Possible SQLi in department.php editid (CVE-2026-13531)'"