CVE-2025-7148: Simple Hospital Management System XSS Flaw

CVE-2025-7148 Overview

CVE-2025-7148 is a stored cross-site scripting (XSS) vulnerability in CodeAstro Simple Hospital Management System version 1.0. The flaw resides in the /patient.html endpoint, where the POST parameter handler fails to sanitize user-supplied input. Attackers can inject arbitrary JavaScript through multiple parameters, and the payload persists in the application. Any user viewing the affected patient records will execute the attacker-controlled script in their browser session. The vulnerability requires low privileges and user interaction to trigger, and the exploit details have been publicly disclosed.

Critical Impact
Authenticated attackers can inject persistent JavaScript payloads that execute in the browsers of other application users, enabling session theft, credential harvesting, and unauthorized actions within the hospital management interface.

Affected Products

CodeAstro Simple Hospital Management System 1.0
Component: POST Parameter Handler in /patient.html
CPE: cpe:2.3:a:codeastro:simple_hospital_management_system:1.0

Discovery Timeline

2025-07-07 - CVE-2025-7148 published to the National Vulnerability Database
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-7148

Vulnerability Analysis

The vulnerability is a stored cross-site scripting flaw classified under CWE-79. It affects the patient data submission workflow in the Simple Hospital Management System. When authenticated users submit data through the /patient.html form, the application stores the input without applying output encoding or input sanitization. When any user subsequently loads a page rendering that stored data, the browser interprets injected HTML and JavaScript as executable content.

Because the payload is persisted server-side, exploitation does not depend on crafted links or social engineering to trick each victim. A single injection continues to affect every viewer of the compromised record. Multiple POST parameters are reported to be affected, expanding the injection surface across the form fields.

Root Cause

The root cause is missing input validation and output encoding in the server-side handler that processes patient record submissions. User-supplied strings pass through the persistence layer and back into rendered HTML without being escaped or sanitized against HTML control characters such as <, >, and quotation marks.

Attack Vector

Exploitation requires network access to the application and low-privileged authenticated access to submit patient data. A user with permission to view rendered patient records must load the compromised page for the payload to fire. The attack is remote and does not require local access to the host. Public documentation of the exploit is available in the GitHub XSS Vulnerability Documentation, and additional tracking is available in VulDB #315086.

A proof-of-concept payload injected into a vulnerable POST parameter would take the form of a standard HTML <script> tag or an event handler such as onerror on an image element. Refer to the linked advisory for the exact payload structure and affected parameter names.

Detection Methods for CVE-2025-7148

Indicators of Compromise

Patient records containing HTML tags, <script> blocks, javascript: URIs, or event handler attributes such as onerror, onload, or onclick
Unusual outbound requests from staff browsers to unfamiliar domains after loading patient pages
Session cookies or authentication tokens observed in web server referrer logs to external hosts

Detection Strategies

Review stored patient records in the database for HTML metacharacters and known XSS payload patterns
Inspect web server logs for POST requests to /patient.html containing encoded or raw <script> fragments
Deploy a web application firewall (WAF) rule set that flags XSS signatures in requests to the patient form

Monitoring Recommendations

Enable browser Content Security Policy (CSP) reporting to capture inline script violations on hospital management pages
Monitor authenticated user sessions for anomalous actions performed shortly after loading patient records
Alert on new outbound domains contacted by workstations that regularly access the application

How to Mitigate CVE-2025-7148

Immediate Actions Required

Restrict access to the Simple Hospital Management System to trusted internal networks until a fix is applied
Audit existing patient records and remove any stored HTML or script content
Rotate session cookies and credentials for any user who accessed patient pages during the exposure window

Patch Information

No vendor patch is referenced in the NVD entry at the time of publication. Organizations should monitor the CodeAstro Home Page for updates and consult the GitHub XSS Vulnerability Documentation for technical details. Because Simple Hospital Management System 1.0 is distributed as source code, operators can apply their own fix by adding server-side input validation and HTML output encoding to the patient form handler.

Workarounds

Place the application behind a WAF configured to block XSS payloads in POST parameters targeting /patient.html
Enforce a strict Content Security Policy that disallows inline scripts and untrusted script sources
Apply server-side encoding using a templating engine's auto-escaping feature or a library such as MarkupSafe for Python
Validate all POST parameters against an allowlist of expected characters before persistence

bash

# Example nginx CSP header to reduce XSS impact
add_header Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'; frame-ancestors 'none';" always;
add_header X-XSS-Protection "1; mode=block" always;
add_header X-Content-Type-Options "nosniff" always;