CVE-2025-54175
📋 TL;DR
QuickCMS.EXT is vulnerable to reflected cross-site scripting (XSS) in the thumbnail viewer functionality via the sFileName parameter. Attackers can craft malicious URLs that execute arbitrary JavaScript in victims' browsers when visited. All users running vulnerable versions of QuickCMS.EXT are affected.
💻 Affected Systems
- QuickCMS.EXT
📦 What is this software?
Quick.cms.ext by Opensolution
⚠️ Risk & Real-World Impact
Worst Case
Complete account takeover, session hijacking, credential theft, and malware distribution to users accessing the malicious URL.
Likely Case
Session hijacking, credential theft from logged-in administrators, and defacement of the CMS interface.
If Mitigated
Limited impact with proper input validation, output encoding, and Content Security Policy (CSP) headers in place.
🎯 Exploit Status
Exploitation requires victim to click a malicious link; no authentication needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: UNKNOWN
Vendor Advisory: https://opensolution.org/professional-cms-system-quick-cms-ext.html
Restart Required: No
Instructions:
No official patch available. Consider workarounds or alternative CMS solutions.
🔧 Temporary Workarounds
Input Validation and Output Encoding
allImplement server-side validation and HTML encoding for the sFileName parameter.
Content Security Policy (CSP)
allDeploy a strict CSP header to block inline script execution and restrict script sources.
Content-Security-Policy: default-src 'self'; script-src 'self'
🧯 If You Can't Patch
- Implement Web Application Firewall (WAF) rules to block XSS payloads in URL parameters.
- Disable or restrict access to the thumbnail viewer functionality if not essential.
🔍 How to Verify
Check if Vulnerable:
Test by injecting a simple XSS payload into the sFileName parameter and checking if it executes.Check Version:
Check CMS admin panel or configuration files for version information.Verify Fix Applied:
Verify that XSS payloads are properly sanitized or blocked and do not execute in the browser.📡 Detection & Monitoring
Log Indicators:
- Unusual or malicious strings in URL parameters, especially sFileName.
Network Indicators:
- HTTP requests with suspicious script tags or JavaScript in URL parameters.
SIEM Query:
source="web_logs" AND (url="*sFileName=*<script>*" OR url="*sFileName=*javascript:*")