CVE-2025-58089: MedDream PACS Premium XSS Vulnerability

CVE-2025-58089 Overview

Multiple reflected cross-site scripting (XSS) vulnerabilities exist in the config.php functionality of MedDream PACS Premium 7.3.6.870. These vulnerabilities allow specially crafted malicious URLs to lead to arbitrary JavaScript code execution. An attacker can provide a crafted URL to trigger these vulnerabilities, specifically affecting the longtermdir parameter.

Critical Impact
Attackers can execute arbitrary JavaScript code in the context of a victim's browser session, potentially leading to session hijacking, credential theft, or unauthorized actions within the MedDream PACS Premium medical imaging system.

Affected Products

MedDream PACS Premium 7.3.6.870

Discovery Timeline

2026-01-20 - CVE CVE-2025-58089 published to NVD
2026-01-20 - Last updated in NVD database

Technical Details for CVE-2025-58089

Vulnerability Analysis

This vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation), commonly known as Cross-Site Scripting (XSS). The reflected XSS vulnerability in MedDream PACS Premium occurs when user-supplied input through the longtermdir parameter in config.php is included in the HTTP response without proper sanitization or encoding.

When a victim clicks on a maliciously crafted URL, the injected JavaScript code executes within their browser session with the same privileges as the authenticated user. This is particularly concerning in healthcare environments where PACS (Picture Archiving and Communication System) solutions handle sensitive medical imaging data and patient information.

Root Cause

The root cause of this vulnerability is insufficient input validation and output encoding in the config.php file. The longtermdir parameter accepts user-controlled input that is reflected back to the user's browser without proper sanitization, allowing attackers to inject malicious script content that the browser interprets as legitimate code.

Attack Vector

The attack is conducted over the network and requires user interaction—specifically, a victim must click on a maliciously crafted URL or visit a page containing the malicious link. The attacker crafts a URL containing JavaScript payloads in the longtermdir parameter. When a legitimate user follows this link while authenticated to the MedDream PACS Premium system, the malicious script executes in their browser context, potentially allowing the attacker to steal session cookies, perform actions on behalf of the user, or redirect them to malicious sites.

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

Detection Methods for CVE-2025-58089

Indicators of Compromise

Unusual HTTP requests to config.php containing suspicious JavaScript-like patterns in the longtermdir parameter
Web server logs showing encoded script tags (<script>, %3Cscript%3E, etc.) in URL query strings
Unexpected redirects or external domain references in request parameters targeting the PACS system
Reports from users experiencing unexpected browser behavior when accessing MedDream PACS

Detection Strategies

Implement Web Application Firewall (WAF) rules to detect and block common XSS payloads in URL parameters
Configure intrusion detection systems to alert on requests containing script injection patterns targeting config.php
Enable verbose logging on the MedDream PACS server to capture all requests to the config.php endpoint
Deploy Content Security Policy (CSP) headers to mitigate the impact of successful XSS exploitation

Monitoring Recommendations

Monitor web server access logs for requests to config.php with abnormally long or encoded query strings
Set up alerts for multiple failed or suspicious requests from the same source IP targeting configuration endpoints
Review application logs for any JavaScript execution errors that may indicate blocked XSS attempts
Implement regular security scans focusing on input validation weaknesses in the PACS web interface

How to Mitigate CVE-2025-58089

Immediate Actions Required

Restrict network access to the MedDream PACS Premium administrative interface to trusted IP addresses only
Implement a Web Application Firewall with XSS protection rules in front of the PACS server
Ensure all users are educated about the risks of clicking on suspicious links, especially those targeting the PACS system
Review and audit user sessions for any signs of compromise or unauthorized activity

Patch Information

Consult the Talos Intelligence Vulnerability Report for the latest patch information and vendor guidance. Contact MedDream directly for security updates addressing MedDream PACS Premium version 7.3.6.870 and ensure all systems are updated to the latest patched version when available.

Workarounds

Deploy a reverse proxy or WAF configured to sanitize or block requests containing potentially malicious script content in URL parameters
Implement Content Security Policy headers to restrict inline script execution on the PACS web interface
Limit access to config.php to authenticated administrators only through network segmentation or access control lists
Consider disabling or restricting the vulnerable functionality until a vendor patch is available

bash

# Example WAF rule to block XSS in longtermdir parameter (ModSecurity)
SecRule ARGS:longtermdir "@detectXSS" \
    "id:100001,\
    phase:2,\
    deny,\
    status:403,\
    log,\
    msg:'Potential XSS attack detected in longtermdir parameter - CVE-2025-58089'"