CVE-2025-56807
📋 TL;DR
This cross-site scripting (XSS) vulnerability in FairSketch RISE Ultimate Project Manager & CRM allows administrators to inject malicious JavaScript when creating folders via the admin dashboard file explorer. The stored XSS payload can execute in other users' browsers, potentially compromising their sessions. Only administrators can exploit this vulnerability, but it affects all users who access the compromised interface.
💻 Affected Systems
- FairSketch RISE Ultimate Project Manager & CRM
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Administrator account compromise leading to full system takeover, data theft, or ransomware deployment through privilege escalation.
Likely Case
Session hijacking of other administrators or users, credential theft, or defacement of the application interface.
If Mitigated
Limited impact with proper input validation and output encoding, potentially only affecting the specific administrator's session.
🎯 Exploit Status
Proof of concept available on GitHub. Requires administrator credentials to access the vulnerable file explorer interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 3.9.5 or later
Vendor Advisory: http://fairsketch.com
Restart Required: No
Instructions:
1. Backup your current installation. 2. Download the latest version from the official vendor website. 3. Replace the vulnerable files with patched versions. 4. Clear browser caches and test functionality.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation to sanitize folder names and prevent JavaScript injection.
Output Encoding
allApply proper output encoding when displaying folder names in the user interface.
🧯 If You Can't Patch
- Restrict admin dashboard access to trusted IP addresses only using firewall rules.
- Implement web application firewall (WAF) rules to block XSS payloads in folder creation requests.
🔍 How to Verify
Check if Vulnerable:
Attempt to create a folder with a JavaScript payload like <script>alert('XSS')</script> in the admin dashboard file explorer. If the script executes when viewing the folder, the system is vulnerable.Check Version:
Check the software version in the admin dashboard or configuration files. For web interface: typically visible in footer or about page.Verify Fix Applied:
After patching, repeat the test with the same payload. The script should not execute, and special characters should be properly encoded or rejected.📡 Detection & Monitoring
Log Indicators:
- Unusual folder creation events with special characters or script tags in admin logs
- Multiple failed login attempts followed by successful admin login and folder creation
Network Indicators:
- HTTP POST requests to folder creation endpoints containing script tags or JavaScript code
- Unusual outbound connections from the application server after folder creation
SIEM Query:
source="web_server_logs" AND (uri="/admin/file-explorer/create-folder" OR uri="/admin/folder/create") AND (body CONTAINS "<script>" OR body CONTAINS "javascript:")