CVE-2026-1117 Improper Access Control in parisneo/lollms
Unauthenticated attackers can trigger sensitive Socket.IO events in lollms, causing denial of service and state corruption due to missing access controls.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-1117?
CVE-2026-1117 is a high-severity missing authorization vulnerability in parisneo/lollms, published on 2 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-284
Which versions are affected by CVE-2026-1117?
3 open source packages ship an affected version, including lollms.
| Package | Affected | Fixed in |
|---|---|---|
lollms PyPI | All versions | 2.1.0 |
lollms PyPI | All versions | 2.1.0 |
lollms PyPI | All versions | 2.1.0 |
How do I fix CVE-2026-1117?
Upgrade lollms to 2.1.0 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-1117 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1117 exists.
Sources
Also known as GHSA-82fw-ch24-j34w, PYSEC-2026-1586.