CVE-2025-31992
📋 TL;DR
HCL Unica MaxAI Assistant has a HTML injection vulnerability where attackers can inject malicious HTML/JavaScript that executes in users' browsers. This affects all users of vulnerable versions who interact with the application. The vulnerability allows client-side code execution within the user's session context.
💻 Affected Systems
- HCL Unica MaxAI Assistant
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, perform actions as authenticated users, redirect to malicious sites, or conduct phishing attacks within the application.
Likely Case
Attackers would typically use this for session hijacking, credential theft, or defacing application content visible to other users.
If Mitigated
With proper input validation and output encoding, injected content would be rendered as plain text rather than executable code.
🎯 Exploit Status
Requires attacker to have ability to inject HTML/JavaScript into application inputs that are then rendered to other users.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched versions
Vendor Advisory: https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0124424
Restart Required: No
Instructions:
1. Review vendor advisory KB0124424 2. Apply recommended patches/updates 3. Verify input validation and output encoding are properly implemented
🔧 Temporary Workarounds
Implement Input Validation
allAdd server-side validation to sanitize user inputs and reject HTML/JavaScript content
Enable Output Encoding
allEnsure all user-controlled data is properly HTML-encoded before rendering in browser
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block HTML/JavaScript injection patterns
- Restrict user input fields to accept only expected character sets and lengths
🔍 How to Verify
Check if Vulnerable:
Test if HTML/JavaScript can be injected into user input fields and executed when renderedCheck Version:
Check application version against vendor's patched version listVerify Fix Applied:
Verify injected HTML/JavaScript appears as plain text rather than executing when rendered📡 Detection & Monitoring
Log Indicators:
- Unusual HTML/JavaScript patterns in user input logs
- Multiple failed input validation attempts
Network Indicators:
- HTTP requests containing suspicious HTML/JavaScript payloads
SIEM Query:
source="web_logs" AND (message="<script>" OR message="javascript:" OR message="onload=" OR message="onerror=")