Medium severity5.9NVD Advisory· Published Oct 25, 2026

CVE-2026-116174

Description

vLLM from 0.22.0 before 0.24.0 contains an improper input validation vulnerability in the Rust gRPC Generate and GenerateStream service that forwards unchecked prompt token IDs to EngineCore. Attackers can submit requests with out-of-vocabulary prompt.token_ids values to trigger a fatal embedding lookup failure that terminates EngineCore and leaves the server unhealthy.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Vllm/Vllmllm-create
Range: 0.22.0 <= x < 0.24.0

Patches

Vulnerability mechanics

References

github.com/vllm-project/vllm/security/advisories/GHSA-w2v2-5662-8v5qnvd
www.vulncheck.com/advisories/vllm-0.22.0-before-0.24.0-denial-of-service-via-rust-grpc-generatenvd

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cvss	0.384
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000