CVE-2026-109523 in Online-Appointment-Booking-System
Summary
by MITRE • 10/13/2026
A vulnerability was found in girishsaraf Online-Appointment-Booking-System up to f427b4757128ca253d33d0cc4e87bbb9c999a4d5. Affected by this vulnerability is an unknown functionality of the file Admin/getclinic.php of the component AJAX Endpoint. The manipulation of the argument city/cid results in sql injection. The attack can be executed remotely. The exploit has been made public and could be used. This product implements a rolling release for ongoing delivery, which means version information for affected or updated releases is unavailable. The project was informed of the problem early through an issue report but has not responded yet.
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Analysis
by VulDB Data Team • 10/13/2026
The girishsaraf Online-Appointment-Booking-System contains a critical security flaw within its administrative AJAX endpoint located at Admin/getclinic.php, specifically affecting versions up to commit f427b4757128ca253d33d0cc4e87bbb9c999a4d5. This vulnerability manifests as an SQL injection weakness triggered by the manipulation of the city or cid argument passed through the AJAX interface. Because this endpoint is designed to handle dynamic requests for clinic data based on location identifiers, it directly incorporates user-supplied input into database queries without adequate sanitization or parameterization. The absence of proper validation allows attackers to inject malicious SQL commands that can alter the logic of the underlying query, potentially leading to unauthorized access, data exfiltration, or modification of critical appointment and patient records stored within the system's backend database.
From a technical perspective, this flaw aligns with CWE-89, which categorizes improper neutralization of special elements used in an SQL command, commonly known as SQL injection. The vulnerability is particularly severe because it resides in an administrative component, suggesting that exploitation could grant attackers elevated privileges if the web application user account has sufficient database permissions. Although the product utilizes a rolling release model where specific version numbers are not always clearly delineated for updated releases, the commit hash provided serves as a definitive boundary for affected codebases prior to potential remediation efforts. The fact that exploit code has been made public significantly increases the risk landscape, enabling less skilled threat actors to leverage existing tools against vulnerable instances without needing to develop custom payloads from scratch.
The operational impact of this vulnerability is substantial due to its remote executability and the nature of the affected component. An attacker can initiate an attack over a network connection, such as the internet or an internal LAN, by crafting specific HTTP requests that target the getclinic.php endpoint with maliciously crafted cid parameters. Successful exploitation could result in the disclosure of sensitive information including patient details, clinic operational data, and potentially administrative credentials if stored within the same database schema. Furthermore, depending on the database engine configuration, advanced injection techniques might allow for command execution or denial-of-service conditions by overwhelming the database server with complex queries. This compromises the confidentiality, integrity, and availability pillars of security for any organization relying on this booking system for their clinical operations.
Mitigation strategies must prioritize immediate remediation given the public availability of exploits. The primary technical fix involves refactoring the affected PHP code to use prepared statements or parameterized queries instead of concatenating user input directly into SQL strings. This ensures that data is treated strictly as parameters rather than executable code, effectively neutralizing injection attempts regardless of their content. Additionally, implementing strict input validation on the client and server sides can provide defense-in-depth by rejecting unexpected characters or formats for city identifiers. Access controls should also be reviewed to ensure that administrative endpoints are not exposed publicly without robust authentication mechanisms such as multi-factor authentication and IP whitelisting where feasible.
In terms of threat intelligence mapping, this vulnerability corresponds to MITRE ATT&CK techniques related to SQL injection attacks used for data exfiltration or privilege escalation. Organizations deploying this software should immediately audit their instances against the specified commit hash range and apply patches if available from upstream repositories. Since the project maintainers have not yet responded to early issue reports, users must assume that no official patch exists in current rolling releases until confirmed otherwise. Continuous monitoring of web server logs for anomalous SQL syntax errors or unusual query patterns targeting this endpoint can help detect ongoing exploitation attempts while permanent fixes are being developed and deployed by system administrators.