CVE-2026-116482 in online-clinic-management-system
Summary
by MITRE • 10/26/2026
A vulnerability has been found in subhajitkhan online-clinic-management-system up to e9ee77a8827a1446220fa07ee693dc4d9a29a578. Affected is an unknown function of the file patientregistration.php. Such manipulation of the argument pat_name leads to cross site scripting. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. This product does not use versioning. This is why information about affected and unaffected releases are 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 • 10/26/2026
The online-clinic-management-system developed by subhajitkhan contains a critical security flaw within its patient registration module, specifically located in the file patientregistration.php. This vulnerability manifests as a stored or reflected cross-site scripting (XSS) issue resulting from insufficient input validation and output encoding of the pat_name argument. When an attacker supplies malicious script content through this parameter, the application fails to sanitize the data before processing it for display or storage. Consequently, the injected scripts are executed within the context of the victim's browser session whenever the compromised data is rendered by the web page. This lack of proper sanitization represents a fundamental failure in handling user-supplied input, allowing attackers to inject client-side code that bypasses standard security controls designed to prevent script execution from untrusted sources.
From an operational perspective, this vulnerability poses significant risks to both end-users and system administrators. Since the attack can be launched remotely without requiring authentication for certain entry points or through social engineering tactics targeting authenticated users, the barrier to exploitation is low. Successful exploitation allows attackers to execute arbitrary JavaScript in the context of the application's domain. This capability enables a range of malicious activities including session hijacking where attacker-controlled scripts steal sensitive cookies containing session tokens, credential theft by capturing login information entered into forms on the page, and keylogging to monitor user activity. Furthermore, if the system stores patient data persistently, the XSS payload could be stored in the database and served to every subsequent visitor or administrator who views that record, amplifying the impact from a single-user compromise to a widespread infection vector within the clinic's network environment.
The technical classification of this flaw aligns with CWE-79 Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting. The specific mechanism involves the application accepting user input via the pat_name field and subsequently rendering it directly into HTML output without applying appropriate encoding or filtering strategies such as context-aware escaping. This behavior violates fundamental secure coding principles that mandate treating all external data as untrusted until explicitly validated against a whitelist of expected formats. In terms of offensive security frameworks, this vulnerability facilitates techniques categorized under ATT&CK T1059 Command and Scripting Interpreter for executing arbitrary code within the browser environment and potentially T1078 Valid Accounts if used to escalate privileges by stealing session tokens from authenticated users like doctors or receptionists who manage patient records.
Although the project has not responded to early disclosures regarding this issue, immediate mitigation steps are necessary to secure the deployment. Developers must implement strict input validation on the server side for the pat_name parameter ensuring that only expected alphanumeric characters and safe punctuation are accepted while rejecting any HTML tags or script-like patterns. Additionally output encoding must be applied consistently whenever user-supplied data is inserted into HTML contexts using context-specific escaping techniques such as HTML entity encoding to prevent browser interpretation of injected scripts. Implementing a Content Security Policy header can also provide an additional layer of defense by restricting the sources from which scripts are allowed to execute thereby mitigating the impact even if some injection attempts succeed. Regular security audits and static code analysis tools should be integrated into the development lifecycle to detect such input handling flaws before they reach production environments ensuring the integrity and confidentiality of sensitive patient health information managed by the system.