CVE-2026-13530: Hospital Management System SQLi Vulnerability

CVE-2026-13530 Overview

CVE-2026-13530 is a SQL injection vulnerability in itsourcecode Hospital Management System 1.0. The flaw resides in the /appointmentdetail.php file, part of the Appointment Handler component. Attackers can manipulate the editid parameter to inject arbitrary SQL statements into backend database queries.

The vulnerability is remotely exploitable and requires low-level privileges. A public exploit is referenced in the associated advisory, increasing the risk of opportunistic attacks against exposed instances. The weakness is classified under [CWE-74] (Improper Neutralization of Special Elements in Output Used by a Downstream Component).

Critical Impact
Remote attackers can inject SQL through the editid parameter in /appointmentdetail.php, potentially exposing patient appointment data and other database contents.

Affected Products

itsourcecode Hospital Management System 1.0
Component: Appointment Handler (/appointmentdetail.php)
Parameter: editid

Discovery Timeline

2026-06-29 - CVE-2026-13530 published to NVD
2026-06-30 - Last updated in NVD database

Technical Details for CVE-2026-13530

Vulnerability Analysis

The vulnerability exists in the appointment management workflow of itsourcecode Hospital Management System 1.0. The /appointmentdetail.php script accepts the editid HTTP parameter and passes it into a SQL query without adequate sanitization or parameterization. An attacker can supply crafted SQL syntax to alter the query logic.

Successful exploitation allows reading, modifying, or deleting database records handled by the Appointment Handler. Because hospital management systems store personally identifiable information (PII) and protected health information (PHI), unauthorized database access carries downstream compliance and privacy consequences. The EPSS probability sits at 0.2%, indicating limited observed exploitation attempts so far.

Root Cause

The root cause is improper neutralization of user-supplied input in a downstream SQL interpreter. The editid value is concatenated directly into a database query string. The application does not use prepared statements, parameterized queries, or input allowlists to constrain the parameter to expected integer values.

Attack Vector

Exploitation occurs over the network against the vulnerable PHP endpoint. An authenticated user with low privileges submits an HTTP request to /appointmentdetail.php with a malicious editid value. The server executes the injected SQL, returning results or side effects to the attacker. No user interaction beyond issuing the request is required.

A typical payload appends boolean, UNION-based, or time-based SQL clauses to editid to enumerate tables, extract credentials, or dump appointment records. Public references, including the GitHub Issue Tracker and the VulDB CVE Entry CVE-2026-13530, describe the exploitation path.

Detection Methods for CVE-2026-13530

Indicators of Compromise

HTTP requests to /appointmentdetail.php containing SQL metacharacters such as ', --, UNION, SLEEP(, or SELECT in the editid parameter.
Unusual database error responses returned from the appointment endpoint.
Spikes in query volume or long-running queries against appointment-related tables originating from the web application user.

Detection Strategies

Deploy web application firewall (WAF) signatures that flag SQL injection patterns targeting the editid parameter.
Enable database query logging and alert on queries containing tautologies (OR 1=1), UNION operators, or comment terminators originating from appointmentdetail.php.
Correlate authenticated session activity with anomalous parameter values to identify low-privileged accounts probing the endpoint.

Monitoring Recommendations

Monitor PHP application logs for HTTP 500 responses tied to /appointmentdetail.php.
Track outbound data volumes from the database server to detect exfiltration following successful injection.
Review authentication logs for accounts issuing unusual numbers of requests to the Appointment Handler.

How to Mitigate CVE-2026-13530

Immediate Actions Required

Restrict network access to the Hospital Management System until a fix is applied, limiting exposure to trusted internal ranges.
Disable or gate the /appointmentdetail.php endpoint behind additional authentication and authorization checks.
Audit database accounts used by the web application and revoke privileges beyond those strictly required.

Patch Information

No vendor patch is referenced in the advisory sources. Consult the ITSourceCode Resource Hub and the VulDB Vulnerability Record #374538 for updates. Until an official fix is released, apply the workarounds below and consider replacing vulnerable code paths with parameterized queries.

Workarounds

Rewrite the affected query to use PHP Data Objects (PDO) prepared statements with bound parameters for editid.
Cast editid to an integer server-side before use, rejecting any non-numeric input.
Deploy WAF rules blocking SQL metacharacters in requests targeting /appointmentdetail.php.
Enforce least-privilege database credentials so the web application cannot read tables outside its scope.

bash

# Example ModSecurity rule to block SQL injection attempts against editid
SecRule REQUEST_URI "@contains /appointmentdetail.php" \
    "chain,phase:2,deny,status:403,id:1013530,\
    msg:'Potential SQLi in editid parameter (CVE-2026-13530)'"
    SecRule ARGS:editid "@rx (?i)(union|select|sleep\(|--|';|or\s+1=1)" "t:none"