Vulnerability in Vllm-Project Vllm
CVE-2026-114051
vLLM before 0.31.0 skips the min_tokens <= max_tokens check for /inference/v1/generate requests with a null max_tokens, so the EngineCore input thread later dies on an uncaught VLLMValidationError while /health still returns 200. Unauthenticated remote attackers can send one request with an oversized min_tokens to hang all subsequent generation requests until manual restart.
Published .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/vllm-project/vllm/security/advisories/GHSA-4xqp-c3mv-qff7 (vendor-advisory)
- www.vulncheck.com/advisories/vllm-before-0.31.0-denial-of-service-via-min-token… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-114051?
- CVE-2026-114051 is a high-severity vulnerability in Vllm-Project Vllm, classified under CWE-248. CVSS score: 7.5/10. Published 2026-10-21.
- How severe is CVE-2026-114051?
- High severity. CVSS v3 base score is 7.5 out of 10.