CVE-2025-58080: MedDream PACS Premium XSS Vulnerability

CVE-2025-58080 Overview

A reflected cross-site scripting (XSS) vulnerability exists in the modifyHL7App functionality of MedDream PACS Premium 7.3.6.870. This vulnerability allows an attacker to craft a malicious URL that, when visited by a victim, executes arbitrary JavaScript code in the context of the victim's browser session. The attack requires user interaction, specifically tricking a user into clicking a specially crafted link.

Critical Impact

Attackers can execute arbitrary JavaScript code in the context of authenticated user sessions, potentially leading to session hijacking, credential theft, or unauthorized actions within the MedDream PACS medical imaging system.

Affected Products

• MedDream PACS Premium 7.3.6.870
• Earlier versions of MedDream PACS Premium may also be affected

Discovery Timeline

• 2026-01-20 - CVE-2025-58080 published to NVD
• 2026-01-20 - Last updated in NVD database

Technical Details for CVE-2025-58080

Vulnerability Analysis

This reflected XSS vulnerability (CWE-79) exists in the modifyHL7App functionality of MedDream PACS Premium. The application fails to properly sanitize user-supplied input before reflecting it back in HTTP responses. When a user clicks on a malicious URL, the injected script executes within their browser with the same privileges as the legitimate application.

In healthcare environments like PACS (Picture Archiving and Communication System), this vulnerability is particularly concerning. MedDream PACS is used for medical imaging workflows, and successful exploitation could allow attackers to access sensitive patient data, modify imaging records, or impersonate clinical staff within the system.

Root Cause

The root cause of this vulnerability is improper input validation and output encoding in the modifyHL7App function. User-controlled input is reflected directly into the HTML response without adequate sanitization, allowing attackers to inject malicious script content. This represents a failure to implement proper output encoding mechanisms that would neutralize potentially dangerous characters before rendering them in the browser.

Attack Vector

The attack is network-based and requires user interaction. An attacker crafts a malicious URL containing JavaScript payload and delivers it to potential victims through phishing emails, malicious websites, or social engineering tactics. When an authenticated user clicks the link, the malicious JavaScript executes in their browser session.

The attacker does not require any privileges on the target system to execute this attack. However, the scope is changed (indicated by the changed scope in the vulnerability assessment), meaning the vulnerable component and impacted component are different—the vulnerability exists in the web application, but the impact occurs in the victim's browser.

The attack could be used to steal session cookies, capture credentials, perform actions on behalf of the victim, or redirect users to malicious sites. In a healthcare context, this could compromise protected health information (PHI) and violate HIPAA compliance requirements.

Detection Methods for CVE-2025-58080

Indicators of Compromise

• Suspicious URLs containing encoded JavaScript payloads targeting the modifyHL7App endpoint
• Web server logs showing unusual query parameters with script tags or JavaScript event handlers
• Browser-based alerts or unexpected JavaScript execution when accessing MedDream PACS
• Anomalous network traffic patterns indicating data exfiltration from browser sessions

Detection Strategies

• Implement web application firewall (WAF) rules to detect and block XSS payload patterns in URL parameters
• Monitor web server access logs for requests containing encoded script tags or JavaScript keywords targeting PACS endpoints
• Deploy browser security policies such as Content Security Policy (CSP) headers to restrict script execution
• Use endpoint detection and response (EDR) solutions to identify suspicious browser behavior following link clicks

Monitoring Recommendations

• Enable detailed logging for all requests to the modifyHL7App functionality
• Configure security information and event management (SIEM) alerts for potential XSS attack patterns
• Monitor for unusual authentication patterns that could indicate session hijacking
• Review network traffic for data exfiltration attempts following XSS exploitation

How to Mitigate CVE-2025-58080

Immediate Actions Required

• Apply vendor security patches when available from MedDream
• Implement Content Security Policy (CSP) headers to restrict inline script execution
• Configure web application firewall rules to block known XSS payloads
• Educate users about phishing attacks and the risks of clicking untrusted links
• Consider restricting access to MedDream PACS to trusted network segments only

Patch Information

Users should monitor the Talos Intelligence Vulnerability Report for official patch information from MedDream. Apply security updates as soon as they become available from the vendor.

Workarounds

• Implement strict Content Security Policy (CSP) headers with script-src 'self' to prevent execution of inline scripts
• Deploy a web application firewall (WAF) with XSS filtering capabilities in front of the MedDream PACS instance
• Restrict network access to MedDream PACS to authorized IP addresses and VPN connections only
• Disable or restrict access to the modifyHL7App functionality if not required for operations
• Train clinical and administrative staff to recognize and avoid suspicious URLs

# Example CSP header configuration for Apache
# Add to httpd.conf or .htaccess
Header set Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; frame-ancestors 'self';"

# Example CSP header configuration for Nginx
# Add to nginx.conf server block
add_header Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; frame-ancestors 'self';";