parisneo lollms up to 1.x lollms_generation_events.py add_events access control

Summaryinfo

A vulnerability was found in parisneo lollms up to 1.x. It has been classified as critical. This affects the function add_events of the file lollms_generation_events.py. Performing a manipulation results in access control. This vulnerability is cataloged as CVE-2026-1117. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in parisneo lollms up to 1.x. This affects the function add_events of the file lollms_generation_events.py. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at huntr.com. This vulnerability is uniquely identified as CVE-2026-1117 since 01/17/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Upgrading to version 2.0.0 eliminates this vulnerability. Applying the patch 36a5b513dfefe9c2913bf9b618457b4fea603e3b is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-5096). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• parisneo

Name

• lollms

Version

• 1.x

License

• open-source

Website

• Product: https://github.com/parisneo/lollms/

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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Be aware that VulDB is the high quality source for vulnerability data.

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