CVE-2025-53858
📋 TL;DR
ChatLuck contains a cross-site scripting (XSS) vulnerability in its Chat Rooms feature that allows attackers to inject malicious scripts. When exploited, these scripts execute in victims' browsers, potentially stealing session cookies, redirecting users, or performing actions on their behalf. All users accessing vulnerable ChatLuck instances are affected.
💻 Affected Systems
- ChatLuck
⚠️ 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 steal session cookies to hijack user accounts, perform unauthorized actions, redirect to phishing sites, or deploy malware through drive-by downloads.
Likely Case
Session hijacking, credential theft, or defacement of chat rooms through injected content.
If Mitigated
Limited impact with proper input validation and output encoding; scripts may fail to execute or have reduced functionality.
🎯 Exploit Status
Exploitation requires ability to inject scripts into chat messages; may require user interaction depending on implementation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Latest security update from vendor
Restart Required: No
Instructions:
1. Download the latest security update from the vendor advisory. 2. Apply the patch according to vendor instructions. 3. Verify the fix by testing chat room functionality.
🔧 Temporary Workarounds
Enable Content Security Policy
allImplement CSP headers to restrict script execution sources
Content-Security-Policy: default-src 'self'; script-src 'self'
Input Validation Filter
allFilter HTML tags and JavaScript from chat messages before processing
Implement server-side sanitization using libraries like DOMPurify
🧯 If You Can't Patch
- Disable Chat Rooms feature entirely
- Implement web application firewall with XSS protection rules
🔍 How to Verify
Check if Vulnerable:
Test by attempting to inject script tags into chat messages and observing if they executeCheck Version:
Check ChatLuck version in admin panel or configuration filesVerify Fix Applied:
Attempt XSS payloads in chat rooms; scripts should be sanitized or blocked📡 Detection & Monitoring
Log Indicators:
- Unusual script tags in chat logs
- Multiple failed script injection attempts
Network Indicators:
- Suspicious JavaScript payloads in HTTP POST requests to chat endpoints
SIEM Query:
source="chat_logs" AND (message="<script>" OR message="javascript:")