CVE-2026-76991 in Hospital Management System
Summary
by MITRE • 08/20/2026
A vulnerability was found in itsourcecode Hospital Management System 1.0. This affects an unknown part of the file /viewappointmentapproved.php. Performing a manipulation of the argument delid results in sql injection. Remote exploitation of the attack is possible. The exploit has been made public and could be used.
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Analysis
by VulDB Data Team • 08/21/2026
The identified vulnerability resides within itsourcecode Hospital Management System version 1.0, specifically affecting the file viewappointmentapproved.php. This software component manages approved medical appointments, a critical function in healthcare information systems that handles sensitive patient data including names, contact details, and appointment schedules. The core technical flaw is classified as SQL injection, which stems from improper input validation and sanitization of user-supplied arguments. Specifically, the delid parameter passed to this script is not adequately sanitized before being incorporated into database queries. This allows an attacker to inject malicious SQL code that alters the intended logic of the query executed by the backend database management system.
From a technical perspective, this vulnerability represents a classic instance of CWE-89 Improper Neutralization of Special Elements used in an SQL Command commonly known as SQL Injection. The lack of parameterized queries or strict type checking on the delid argument enables remote attackers to manipulate the structure of SQL statements. By crafting specific payloads for the delid variable, an attacker can bypass authentication mechanisms, extract sensitive data from other tables within the database, modify existing records, or even execute administrative operations depending on the privileges assigned to the database user account associated with the web application. The public availability of exploits further exacerbates the risk, as it lowers the barrier to entry for malicious actors who may not possess advanced technical skills but can leverage pre-built tools to compromise the system.
The operational impact of this vulnerability is severe given the context of a hospital management system. Successful exploitation could lead to unauthorized access to confidential patient health information, violating privacy regulations such as HIPAA in the United States or GDPR in Europe. Beyond data leakage, attackers might use SQL injection to delete appointment records, causing disruptions in healthcare delivery and operational workflows. In more advanced attack scenarios, if the database server is configured with excessive privileges, an attacker could potentially escalate their access to gain control over the underlying operating system, leading to a complete compromise of the hospital's IT infrastructure. This aligns with ATT&CK techniques related to Data from Information Repositories and SQL Injection for initial access or data exfiltration.
Mitigation strategies must focus on immediate remediation of the code flaw and broader security hardening measures. The primary fix involves refactoring viewappointmentapproved.php to use prepared statements with parameterized queries, ensuring that user input is treated strictly as data rather than executable code. Input validation should also be implemented to restrict the delid argument to expected integer formats only. Additionally, deploying a Web Application Firewall can provide an additional layer of defense by detecting and blocking common SQL injection patterns in HTTP requests. Regular security audits and static application security testing are recommended to identify similar vulnerabilities across other components of the system before they can be exploited.