CVE-2025-41102
📋 TL;DR
An HTML injection vulnerability in Fairsketch's RISE CRM Framework v3.8.1 allows attackers to inject malicious HTML code via the 'title' parameter in POST requests to '/events/save'. This affects all users of the vulnerable version who have access to event creation/modification functionality. The vulnerability enables content spoofing and potential cross-site scripting attacks.
💻 Affected Systems
- Fairsketch RISE CRM Framework
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could inject malicious scripts that steal session cookies, redirect users to phishing sites, or perform actions on behalf of authenticated users.
Likely Case
Attackers inject HTML to deface event pages, display fake content, or redirect users to malicious sites.
If Mitigated
With proper input validation and output encoding, injected HTML would be rendered as plain text without execution.
🎯 Exploit Status
Exploitation requires sending a crafted POST request with HTML payload in the 'title' parameter. Authentication level required depends on application configuration.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-fairsketchs-rise-crm-framework
Restart Required: Yes
Instructions:
1. Monitor vendor for security updates. 2. Apply patch when available. 3. Restart web application services.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation to sanitize HTML tags in the 'title' parameter
Implement input sanitization in /events/save endpoint
Web Application Firewall
allDeploy WAF rules to block HTML injection patterns in POST requests
Configure WAF to detect and block HTML tags in 'title' parameter
🧯 If You Can't Patch
- Restrict access to event creation/modification functionality to trusted users only
- Implement Content Security Policy (CSP) headers to mitigate impact of successful injections
🔍 How to Verify
Check if Vulnerable:
Send POST request to /events/save with HTML payload in 'title' parameter and check if HTML renders in responseCheck Version:
Check application version in admin panel or configuration filesVerify Fix Applied:
Test with same payload after fix - HTML should be escaped or rejected📡 Detection & Monitoring
Log Indicators:
- POST requests to /events/save with HTML tags in parameters
- Unusual event creation patterns
Network Indicators:
- HTTP POST to /events/save with suspicious content-length
- HTML tags in POST body parameters
SIEM Query:
source="web_logs" AND uri_path="/events/save" AND (request_body CONTAINS "<script>" OR request_body CONTAINS "<img" OR request_body CONTAINS "onerror=")