Vulnerability Description
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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/vllm-project/vllm/security/advisories/GHSA-4xqp-c3mv-qff7
- https://www.vulncheck.com/advisories/vllm-before-0.31.0-denial-of-service-via-mi
FAQ
What is CVE-2026-114051?
CVE-2026-114051 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 whi...
How severe is CVE-2026-114051?
CVE-2026-114051 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-114051?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.