CVE-2025-58094: MedDream PACS Premium XSS Vulnerability

CVE-2025-58094 Overview

Multiple reflected cross-site scripting (XSS) vulnerabilities exist in the config.php functionality of MedDream PACS Premium 7.3.6.870. These vulnerabilities specifically affect the worklistsrc parameter, allowing specially crafted malicious URLs to execute arbitrary JavaScript code in the context of a victim's browser session. An attacker can provide a crafted URL to trigger these vulnerabilities, potentially compromising user sessions and sensitive medical imaging data.

Critical Impact
Attackers can execute arbitrary JavaScript code in the context of authenticated user sessions, potentially leading to session hijacking, data theft, or unauthorized actions within the medical PACS environment.

Affected Products

MedDream PACS Premium 7.3.6.870
MedDream PACS Premium (earlier versions may also be affected)

Discovery Timeline

2026-01-20 - CVE CVE-2025-58094 published to NVD
2026-01-20 - Last updated in NVD database

Technical Details for CVE-2025-58094

Vulnerability Analysis

This vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation), commonly known as reflected cross-site scripting. The flaw exists in the config.php functionality where user-supplied input through the worklistsrc parameter is not properly sanitized before being reflected back in the HTTP response.

When a user clicks on a maliciously crafted URL containing JavaScript payload in the worklistsrc parameter, the unsanitized input is included in the web page output, causing the browser to execute the attacker-controlled script. Given that MedDream PACS is used in healthcare environments for medical imaging, successful exploitation could expose sensitive patient data (PHI) and compromise the integrity of medical workflows.

Root Cause

The root cause of this vulnerability is insufficient input validation and output encoding in the config.php file. The worklistsrc parameter accepts user input that is subsequently reflected in the page response without proper sanitization or HTML entity encoding. This allows special characters used in JavaScript and HTML to be interpreted by the browser as executable code rather than being treated as plain text.

Attack Vector

The attack vector is network-based and requires user interaction. An attacker must craft a malicious URL containing JavaScript payload in the worklistsrc parameter and convince an authenticated user to click the link. This can be achieved through phishing emails, malicious websites, or social engineering tactics.

The vulnerability enables attackers to:

Steal session cookies and authentication tokens
Perform actions on behalf of the authenticated user
Capture sensitive information displayed on the page
Redirect users to malicious websites
Modify page content to display fraudulent information

For detailed technical analysis, refer to the Talos Intelligence Vulnerability Report.

Detection Methods for CVE-2025-58094

Indicators of Compromise

Suspicious HTTP requests to config.php containing script tags or JavaScript event handlers in the worklistsrc parameter
URL-encoded JavaScript payloads such as %3Cscript%3E or javascript: protocol handlers in request logs
Unusual patterns in web server access logs showing crafted URLs with XSS payloads targeting MedDream PACS endpoints

Detection Strategies

Implement Web Application Firewall (WAF) rules to detect and block XSS patterns in the worklistsrc parameter
Configure intrusion detection systems (IDS) to alert on HTTP requests containing common XSS payload signatures targeting config.php
Enable detailed logging for the MedDream PACS application and monitor for suspicious parameter values

Monitoring Recommendations

Review web server access logs for requests to config.php with unusual or malformed worklistsrc parameter values
Monitor for reports of unexpected JavaScript behavior or browser security warnings from users accessing the MedDream PACS interface
Implement Content Security Policy (CSP) headers and monitor for CSP violation reports that may indicate exploitation attempts

How to Mitigate CVE-2025-58094

Immediate Actions Required

Restrict access to the MedDream PACS web interface to trusted networks only using firewall rules or network segmentation
Implement a Web Application Firewall (WAF) with XSS protection rules in front of the MedDream PACS application
Educate users about the risks of clicking suspicious links, especially those containing the affected application URLs
Apply any available vendor patches or updates for MedDream PACS Premium

Patch Information

Organizations should consult the vendor MedDream for official security patches addressing this vulnerability. Review the Talos Intelligence Vulnerability Report for additional remediation guidance and check with the vendor for updated software versions that address these XSS vulnerabilities.

Workarounds

Implement strict Content Security Policy (CSP) headers to prevent inline script execution
Deploy a reverse proxy or WAF to filter and sanitize incoming requests to config.php
Limit access to the MedDream PACS administrative interface to specific IP addresses or VPN connections
Consider disabling or restricting access to the vulnerable config.php functionality if not operationally required

bash

# Example Apache configuration to add Content Security Policy header
<IfModule mod_headers.c>
    Header set Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'"
</IfModule>

# Example nginx configuration
add_header Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'";