CVE-2024-8939
Published: Sep 17, 2024
Modified: Nov 20, 2025
CVSS v3.1
6.2
Description
A vulnerability was found in the ilab model serve component, where improper handling of the best_of parameter in the vllm JSON web API can lead to a Denial of Service (DoS). The API used for LLM-based sentence or chat completion accepts a best_of parameter to return the best completion from several options. When this parameter is set to a large value, the API does not handle timeouts or resource exhaustion properly, allowing an attacker to cause a DoS by consuming excessive system resources. This leads to the API becoming unresponsive, preventing legitimate users from accessing the service.
| Vendor | Product | Versions |
|---|---|---|
Unknown | vllm | affected 0 - < 0.5.0.post1 |
Red Hat | Red Hat Enterprise Linux AI (RHEL AI) | All versions |
Red Hat | Red Hat Enterprise Linux AI (RHEL AI) | All versions |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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