CVE-2026-1117
HIGH
GHSA-82fw-ch24-j34w
CVSS Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Lifecycle Timeline
3Description
A vulnerability in the `lollms_generation_events.py` component of parisneo/lollms version 5.9.0 allows unauthenticated access to sensitive Socket.IO events. The `add_events` function registers event handlers such as `generate_text`, `cancel_generation`, `generate_msg`, and `generate_msg_from` without implementing authentication or authorization checks. This allows unauthenticated clients to execute resource-intensive or state-altering operations, leading to potential denial of service, state corruption, and race conditions. Additionally, the use of global flags (`lollmsElfServer.busy`, `lollmsElfServer.cancel_gen`) for state management in a multi-client environment introduces further vulnerabilities, enabling one client's actions to affect the server's state and other clients' operations. The lack of proper access control and reliance on insecure global state management significantly impacts the availability and integrity of the service.
Analysis
Unauthenticated clients can invoke resource-intensive Socket.IO events in lollms 5.9.0 due to missing authentication checks in the event handler registration, allowing attackers to trigger denial of service and state corruption. The vulnerability is compounded by improper use of global state flags in multi-client environments, enabling attackers to interfere with legitimate client operations and manipulate server state through race conditions. …
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Remediation
Within 24 hours: Identify all systems running LOLLMS 5.9.0 and isolate them from production networks or restrict access via firewall rules. Within 7 days: Implement network segmentation to limit Socket.IO event exposure and deploy WAF rules to block unauthorized event handlers; begin upgrade planning to a patched version. …
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External POC / Exploit Code
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