CVE-2026-1117
📋 TL;DR
This vulnerability allows unauthenticated attackers to trigger resource-intensive text generation operations and manipulate server state in the lollms application. Any system running the vulnerable version with Socket.IO exposed is affected, potentially leading to denial of service and state corruption.
💻 Affected Systems
- parisneo/lollms
⚠️ Risk & Real-World Impact
Worst Case
Complete service disruption through resource exhaustion, state corruption affecting all users, and potential race conditions leading to data integrity issues.
Likely Case
Denial of service through unauthorized text generation requests consuming server resources, and state manipulation affecting other users' sessions.
If Mitigated
Proper authentication would limit impact to authorized users only, with resource quotas preventing excessive consumption.
🎯 Exploit Status
Exploitation requires only Socket.IO client access to trigger vulnerable events. Public bounty details and commit fix demonstrate exploitability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Fixed in commit 36a5b513dfefe9c2913bf9b618457b4fea603e3b
Vendor Advisory: https://github.com/parisneo/lollms/commit/36a5b513dfefe9c2913bf9b618457b4fea603e3b
Restart Required: Yes
Instructions:
1. Update to latest lollms version. 2. Apply commit 36a5b513dfefe9c2913bf9b618457b4fea603e3b. 3. Restart the lollms service.
🔧 Temporary Workarounds
Network Access Restriction
allRestrict Socket.IO endpoint access to trusted networks only
Use firewall rules to limit access to lollms Socket.IO port (default varies)
Authentication Proxy
allPlace authentication proxy in front of lollms service
Configure nginx/apache with authentication before proxying to lollms
🧯 If You Can't Patch
- Implement network segmentation to isolate lollms from untrusted networks
- Monitor Socket.IO traffic for unauthorized event triggers and implement rate limiting
🔍 How to Verify
Check if Vulnerable:
Check if lollms version is 5.9.0 and Socket.IO endpoints are accessible without authenticationCheck Version:
Check lollms version in application or via package managerVerify Fix Applied:
Verify commit 36a5b513dfefe9c2913bf9b618457b4fea603e3b is applied and test authentication requirements for Socket.IO events📡 Detection & Monitoring
Log Indicators:
- Unauthenticated Socket.IO connections
- High frequency of generate_text events
- State flag manipulation without user context
Network Indicators:
- Socket.IO traffic from unauthorized IPs
- Unusual pattern of generate/cancel events
SIEM Query:
socket_io AND (generate_text OR cancel_generation) AND NOT authenticated_user