CVE-2026-19384 in Simple Doctors Appointment System
Summary
by MITRE • 08/10/2026
A weakness has been identified in SourceCodester Simple Doctors Appointment System 1.0. The affected element is an unknown function of the file /admin/ajax.php?action=set_appointment. This manipulation of the argument ID causes sql injection. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks.
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Analysis
by VulDB Data Team • 08/10/2026
The vulnerability identified in SourceCodester Simple Doctors Appointment System 1.0 represents a critical sql injection flaw within the administrative interface that poses significant security risks to healthcare data systems. This weakness exists in the ajax.php file at the set_appointment action endpoint where user-supplied input is improperly handled without adequate sanitization or validation mechanisms. The vulnerability specifically affects the ID parameter which serves as the primary attack vector for malicious actors seeking to exploit this weakness.
The technical implementation of this flaw demonstrates a classic sql injection vulnerability where the application fails to properly escape or parameterize user inputs before incorporating them into database queries. When an attacker manipulates the ID argument through the set_appointment action, the system directly incorporates this unvalidated input into sql statements without proper input validation or sanitization measures. This allows attackers to inject malicious sql code that can manipulate the underlying database structure and potentially execute arbitrary commands on the database server.
The operational impact of this vulnerability extends beyond simple data compromise as it affects critical healthcare information systems where patient appointments and medical records are stored. Remote exploitation capabilities mean that attackers can target this system from outside the network perimeter without requiring physical access or prior authentication credentials. The public availability of exploits for this vulnerability significantly increases the attack surface and reduces the time window for organizations to implement protective measures. This weakness directly aligns with common attack patterns documented in the attack pattern taxonomy, specifically matching the characteristics described under attack technique T1190 for exploitation of remote services.
Database security standards such as those outlined in the owasp top ten project categorize this type of vulnerability as a critical risk that can lead to complete system compromise and data breaches. The vulnerability exposes sensitive patient information including appointment details, personal health records, and potentially financial data that could be accessed through sql injection attacks. Organizations using this system face potential regulatory compliance violations under healthcare privacy regulations like hipaa and gdpr where unauthorized access to protected health information constitutes serious legal and financial consequences.
Mitigation strategies for this vulnerability must include immediate implementation of input validation and parameterized queries throughout the application codebase, particularly in the affected ajax.php file. The recommended approach involves implementing proper sql query parameterization techniques that separate sql commands from data inputs, thereby preventing malicious code injection. Network-level protections such as web application firewalls should be deployed to monitor and filter suspicious requests targeting this specific endpoint. Additionally, regular security assessments and code reviews should be conducted to identify similar vulnerabilities across other application components that may share the same input handling patterns. The vulnerability also demonstrates the importance of adhering to secure coding practices as specified in cwe guidelines where improper input validation leads to data integrity breaches and unauthorized access to critical systems.
The attack surface for this vulnerability extends beyond simple data theft to include potential system compromise through sql injection attacks that could escalate to full system control. This weakness represents a fundamental failure in the application's security architecture and requires immediate remediation through code-level fixes combined with defensive security measures. Organizations should also consider implementing database activity monitoring solutions to detect and respond to suspicious sql query patterns that may indicate exploitation attempts against similar vulnerabilities within their healthcare information systems.