CVE-2026-116173

EUVD-2026-109434
vLLM from 0.22.0 before 0.24.0 contains a denial of service vulnerability that allows remote attackers to terminate EngineCore by bypassing logprob_token_ids limits in the Rust gRPC frontend. Attackers can send Generate or GenerateStream requests with output_logprobs enabled and more than 128 output_candidates.token_ids, triggering a fatal sampler exception that crashes the engine.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
5.9 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
vllmvllm
0.22.0 ≤
𝑥
< 0.24.0
CNA
Common Weakness Enumeration
References
https://github.com/vllm-project/vllm/security/advisories/GHSA-6pgw-f3pv-4h8q
https://www.vulncheck.com/advisories/vllm-0.22.0-before-0.24.0-denial-of-service-via-grpc-output-candidates-token-ids