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

Quick assessment

Affected
vllm-project vllm
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

vLLM 0.22.0 至 0.24.0 之前的版本中，Rust 实现的 gRPC 和 服务存在输入验证不当的漏洞。该漏洞允许攻击者提交包含词表外（out-of-vocabulary） 值的请求，从而触发致命的嵌入（embedding）查找失败，导致 终止并使服务器进入不健康状态。

CVSS 5.9 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-116174

Vulnerability Information
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Vulnerability Title
vLLM 0.22.0 before 0.24.0 Denial of Service via Rust gRPC Generate
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
vllm-project vllm 0.22.0 ~ 0.24.0 -

II. Public POCs for CVE-2026-116174

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III. Intelligence Information for CVE-2026-116174

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Vendor Advisories for CVE-2026-116174 (2)

Same Patch Batch · vllm-project · 2026-10-25 · 10 CVEs total

CVE-2026-116176 8.2 HIGH vLLM 0.9.2 before 0.24.0 SSRF via X-Request-Id in P2pNcclConnector
CVE-2026-116180 7.7 HIGH vLLM from 0.8.5 before 0.31.0 Cross-Tenant DoS via Uninitialized LogprobsTensors
CVE-2026-116179 7.5 HIGH vLLM 0.18.0 before 0.31.0 Memory Exhaustion via media_io_kwargs num_frames Override
CVE-2026-116177 7.5 HIGH vLLM 0.10.2 before 0.25.0 DoS via Nemotron-VL Processor Decompression-Bomb Guard Bypass
CVE-2026-116175 6.5 MEDIUM vLLM 0.19.0 before 0.24.0 Audio Decompression Bomb DoS via Chat Completions
CVE-2026-116181 6.5 MEDIUM vLLM 0.20.1 before 0.29.0 DoS and GPU Out-of-Bounds Write via stop_token_ids
CVE-2026-116172 5.9 MEDIUM vLLM 0.22.0 before 0.24.0 DoS via Rust gRPC CandidateTokens.top_n
CVE-2026-116173 5.9 MEDIUM vLLM 0.22.0 before 0.24.0 Denial of Service via gRPC output_candidates.token_ids
CVE-2026-116178 5.9 MEDIUM vLLM 0.20.0 before 0.30.0 DoS via /inference/v1/generate mm_placeholders

IV. Related Vulnerabilities

Same product: vllm
Same vendor: vllm-project
Same weakness: CWE-20