{
 "id": "AIR-2024-0166",
 "slug": "cve-2024-8939-vllm-denial-of-service-via-best-of-parameter",
 "title": "CVE-2024-8939: vLLM Denial of Service via best_of parameter",
 "summary": "An improper handling vulnerability in the vLLM JSON web API allows attackers to cause a denial of service by supplying a large best_of parameter. The API becomes unresponsive due to excessive resource exhaustion.",
 "type": "attack_on_ai",
 "categories": [
  "infra_vuln"
 ],
 "severity": 2,
 "targets": [
  "framework_or_tooling"
 ],
 "products": [
  "vLLM"
 ],
 "incident_date": "2024-09-17",
 "incident_date_precision": "day",
 "first_reported": "2024-09-17",
 "sources": [
  {
   "url": "https://github.com/advisories/GHSA-wc36-9694-f9rf",
   "publisher": "GitHub Advisory Database",
   "title": "CVE-2024-8939: vLLM Denial of Service via the best_of parameter",
   "published_at": "2024-09-17"
  },
  {
   "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-8939",
   "publisher": "NVD",
   "title": "CVE-2024-8939: A vulnerability was found in the ilab model serve component, where improper handling of the best_of parameter in the vllm JSON…",
   "published_at": "2024-09-17"
  }
 ],
 "source_count": 2,
 "confidence": 0.95,
 "status": "published",
 "origin": "seed_ghsa",
 "tags": [
  "CVE-2024-8939",
  "denial-of-service",
  "vllm"
 ],
 "created_at": "2026-10-18T07:00:14.101Z",
 "updated_at": "2026-10-18T10:04:21.885Z"
}