CVE-2025-54461
📋 TL;DR
ChatLuck's guest user invitation system has insufficient access control, allowing uninvited users to register as guests. This affects all ChatLuck deployments with guest user functionality enabled. The vulnerability stems from improper validation of invitation permissions.
💻 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
Unauthorized users gain access to chat rooms and potentially sensitive conversations, leading to data exposure, privilege escalation, or disruption of communication.
Likely Case
Uninvited users join chat rooms they shouldn't have access to, potentially viewing confidential discussions or disrupting legitimate conversations.
If Mitigated
With proper access controls, only invited users can register as guests, maintaining intended chat room privacy and security.
🎯 Exploit Status
Exploitation requires understanding of the invitation system but doesn't need advanced technical skills. No public exploit code is available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Latest version with security updates
Restart Required: No
Instructions:
1. Update ChatLuck to the latest version. 2. Verify guest user invitation controls are properly enforced. 3. Review existing guest user registrations for unauthorized entries.
🔧 Temporary Workarounds
Disable Guest User Functionality
allTemporarily disable guest user invitations until patching is complete
Check ChatLuck configuration settings for guest user options
Implement External Access Controls
allUse network-level controls to restrict access to ChatLuck guest registration endpoints
Configure firewall rules to limit access to guest registration APIs
🧯 If You Can't Patch
- Implement strict network segmentation to isolate ChatLuck from untrusted networks
- Enable detailed logging and monitoring of all guest user registration attempts
🔍 How to Verify
Check if Vulnerable:
Attempt to register as a guest user without a valid invitation. If successful, the system is vulnerable.Check Version:
Check ChatLuck admin panel or configuration files for version informationVerify Fix Applied:
After patching, attempt guest registration without invitation should fail with proper access denied message.📡 Detection & Monitoring
Log Indicators:
- Unauthorized guest registration attempts
- Guest users appearing without corresponding invitation logs
- Failed invitation validation events
Network Indicators:
- Unusual traffic patterns to guest registration endpoints
- Multiple registration attempts from single IP
SIEM Query:
guest_registration AND NOT invitation_validated