CVE-2025-58087: MedDream PACS Premium XSS Vulnerability

CVE-2025-58087 Overview

Multiple reflected cross-site scripting (XSS) vulnerabilities exist in the config.php functionality of MedDream PACS Premium 7.3.6.870. Specially crafted malicious URLs can lead to arbitrary JavaScript code execution. An attacker can provide a crafted URL to trigger these vulnerabilities. This vulnerability specifically affects the status parameter.

Critical Impact

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

Affected Products

• MedDream PACS Premium 7.3.6.870
• MedDream PACS Premium (earlier versions potentially affected)

Discovery Timeline

• 2026-01-20 - CVE-2025-58087 published to NVD
• 2026-01-20 - Last updated in NVD database

Technical Details for CVE-2025-58087

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 via the status parameter in config.php is improperly sanitized before being reflected back in the HTTP response.

When exploited, malicious JavaScript code embedded in a crafted URL is executed in the victim's browser within the security context of the MedDream PACS application. This is particularly concerning in healthcare environments where PACS systems handle sensitive medical imaging data and patient information.

The attack requires user interaction, specifically clicking on a malicious link, but does not require authentication to deliver the payload. The scope is changed, meaning the vulnerability can affect resources beyond the vulnerable component itself.

Root Cause

The root cause of this vulnerability is insufficient input validation and output encoding in the config.php file. The status parameter accepts user-controlled input that is directly reflected in the page output without proper sanitization or encoding. This allows attackers to inject arbitrary HTML and JavaScript content that will be rendered by the victim's browser.

Attack Vector

The attack vector is network-based and requires user interaction. An attacker crafts a malicious URL containing JavaScript payload in the status parameter and tricks an authenticated user into clicking the link. This can be accomplished through phishing emails, malicious websites, or social engineering tactics.

When a victim clicks the malicious URL, the injected JavaScript executes in their browser session. This could allow the attacker to steal session cookies, capture credentials, perform actions on behalf of the user, or access sensitive medical imaging data displayed within the PACS interface.

For detailed technical information about this vulnerability, refer to the Talos Intelligence Vulnerability Report.

Detection Methods for CVE-2025-58087

Indicators of Compromise

• Unusual URL patterns in web server logs containing encoded JavaScript or HTML tags in the status parameter of config.php
• User reports of unexpected browser behavior or pop-ups when accessing MedDream PACS
• Suspicious outbound connections from user browsers after accessing PACS application URLs
• Session tokens appearing in external request logs

Detection Strategies

• Monitor web application firewall (WAF) logs for XSS attack patterns targeting config.php
• Implement content security policy (CSP) violation reporting to detect inline script execution attempts
• Review HTTP access logs for requests to config.php containing suspicious encoded characters or script tags
• Deploy browser-based security controls to detect and block reflected XSS payloads

Monitoring Recommendations

• Enable detailed logging for the MedDream PACS web application, particularly for the config.php endpoint
• Configure SIEM rules to alert on potential XSS patterns in URL parameters
• Monitor for anomalous user session behavior that may indicate session hijacking following XSS exploitation
• Implement network monitoring for data exfiltration attempts from browser sessions

How to Mitigate CVE-2025-58087

Immediate Actions Required

• Contact MedDream for security patches or updated versions addressing this vulnerability
• Implement a Web Application Firewall (WAF) with XSS filtering rules as a temporary mitigation
• Restrict access to the MedDream PACS application to trusted networks and users only
• Educate users about the risks of clicking untrusted links, especially those containing suspicious URL parameters

Patch Information

Consult the Talos Intelligence Vulnerability Report for the latest patch information and remediation guidance from the vendor. Organizations should prioritize updating to a patched version of MedDream PACS Premium when available.

Workarounds

• Deploy a reverse proxy or WAF configured to sanitize or block requests containing potential XSS payloads in the status parameter
• Implement Content Security Policy (CSP) headers to prevent inline script execution
• Restrict direct access to config.php if the functionality is not required for normal operations
• Enable HTTP-only and Secure flags on session cookies to reduce the impact of potential XSS exploitation

# Example WAF rule configuration (ModSecurity)
# Block XSS attempts in status parameter for config.php
SecRule REQUEST_URI "@contains /config.php" \
    "id:100001,phase:2,deny,status:403,log,\
    chain"
SecRule ARGS:status "@rx (?i)(<script|javascript:|on\w+=)" \
    "t:none,t:urlDecodeUni,t:htmlEntityDecode"