CVE-2025-50367 in Medical Card Generation System
Summary
by MITRE • 06/27/2025
A stored blind XSS vulnerability exists in the Contact Page of the Phpgurukul Medical Card Generation System 1.0 mcgs/contact.php. The name field fails to properly sanitize user input, allowing an attacker to inject malicious JavaScript.
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Analysis
by VulDB Data Team • 06/28/2025
The stored blind cross-site scripting vulnerability identified as CVE-2025-50367 resides within the contact page functionality of the Phpgurukul Medical Card Generation System version 1.0. This critical security flaw manifests in the mcgs/contact.php file where the name field processing lacks proper input validation and sanitization mechanisms. The vulnerability represents a classic stored XSS attack vector where malicious JavaScript code injected by an attacker persists in the application's database and executes whenever the compromised data is retrieved and displayed to unsuspecting users. The flaw operates under CWE-79 which categorizes cross-site scripting vulnerabilities as weaknesses in input validation and output encoding, specifically targeting the failure to properly sanitize user-supplied data before incorporating it into web page content. This vulnerability directly maps to attack techniques documented in the MITRE ATT&CK framework under TA0001 Initial Access and TA0002 Execution, as attackers can leverage this flaw to establish persistent access and execute arbitrary code within victim browsers.
The technical implementation of this vulnerability stems from inadequate server-side input validation within the contact form processing logic. When users submit contact information through the mcgs/contact.php endpoint, the application accepts the name parameter without implementing proper sanitization filters or encoding mechanisms. The malicious JavaScript payload is stored in the system's database and subsequently rendered in the contact page output without appropriate HTML escaping or context-aware encoding. This creates an environment where any user who views the contact page or related data displays will execute the injected script within their browser context, potentially leading to session hijacking, credential theft, or redirection to malicious sites. The stored nature of this vulnerability means that the malicious payload remains active even after the initial injection, making it particularly dangerous as it can affect multiple users over extended periods without requiring repeated exploitation attempts.
The operational impact of CVE-2025-50367 extends beyond simple data theft or session manipulation to encompass broader system compromise and user privacy violations. An attacker could exploit this vulnerability to execute scripts that steal authentication cookies, redirect users to phishing sites, or even inject additional malicious payloads that escalate privileges within the victim's browser environment. The medical card generation system context amplifies the severity as this platform likely handles sensitive patient information, making the potential data breach consequences particularly grave. Organizations using this system face potential regulatory violations under healthcare data protection regulations such as HIPAA, GDPR, or similar privacy frameworks due to the exposure of user data through this XSS vulnerability. The persistence of stored XSS attacks means that the vulnerability remains active until properly patched, creating ongoing risk exposure that can be exploited by multiple attackers over time.
Mitigation strategies for CVE-2025-50367 must address both immediate remediation and long-term security architecture improvements. The primary fix involves implementing comprehensive input validation and output encoding at the server-side processing level where user data enters the system. This includes sanitizing the name field through proper HTML entity encoding before storing data in the database and applying context-appropriate encoding when rendering data back to users. The implementation should follow security best practices including the use of Content Security Policy headers to limit script execution, input length restrictions, and regular security scanning of application components. Organizations should also consider implementing web application firewalls to detect and block suspicious input patterns, while conducting regular security assessments to identify similar vulnerabilities across the entire application stack. Additionally, developers should follow secure coding guidelines and incorporate automated security testing into their development lifecycle to prevent similar issues from emerging in future releases. The remediation process should include thorough testing of the patched functionality to ensure that legitimate user inputs continue to work properly while malicious payloads are effectively neutralized.