Vulnerability · Published Oct 25, 2026 · Assigned by VulnCheck

CVE-2026-116174vLLM 0.22.0 before 0.24.0 Denial of Service via Rust gRPC Generate

Medium 5.9

In plain English

A medium-severity improper input validation in vllm from vllm-project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).

Severity (CVSS 3.1)5.9Medium

Exploit odds (30 days)0.3%top 79.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
vllm-project	vllm	0.22.0 – before 0.24.0

Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

References

GitHub Security Advisory (GHSA-w2v2-5662-8v5q) vendor-advisory
VulnCheck Advisory: vLLM 0.22.0 before 0.24.0 Denial of Service via Rust gRPC Generate third-party-advisory