Vulnerability in vllm-project vllm

[ Description ]Official 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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund20 Oct 2026WID-SEC-2026-4076

  vllm: Multiple vulnerabilities Translated from German

  CVE-2026-114050CVE-2026-114053CVE-2026-114052+4 more CVEs

[ References ]References

• github.com/vllm-project/vllm/security/advisories/GHSA-4xqp-c3mv-qff7
• www.vulncheck.com/advisories/vllm-before-0.31.0-denial-of-service-via-min-tokens-in-inf…