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  4. CVE 2026 116173 vllm 0220 before 0240 denial of service via grpc
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Back to active CVEs
High · CVSS 8.2CVE-2026-116173

vLLM 0.22.0 before 0.24.0 Denial of Service via gRPC output_candidates.token_idsCVE-2026-116173

Answer in brief

CVE-2026-116173 records a High severity (CVSS 8.2) vulnerability in vLLM 0.22.0 before 0.24.0 Denial of Service via gRPC output_candidates.token_ids. The current sources do not mark it as known exploited. The current feed maps vllm-project/vllm (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 25, 2026Updated Oct 25, 2026Source checked Oct 25, 2026First seen by HOL Oct 25, 2026Material review Oct 25, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.2
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 8.2. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps vllm-project/vllm (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
vllm-project/vllmgeneric>=0.22.0 <0.24.00.24.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for vllm-project/vllm.
  2. 2Review the reported fix. Update vllm-project/vllm to 0.24.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 25, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 25, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 25, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • vLLM 0.22.0 before 0.24.0 DoS via Rust gRPC CandidateTokens.top_nSame vllm-project/vllm package
  • vLLM 0.22.0 before 0.24.0 Denial of Service via Rust gRPC GenerateSame vllm-project/vllm package
  • vLLM 0.19.0 before 0.24.0 Audio Decompression Bomb DoS via Chat CompletionsSame vllm-project/vllm package
  • vLLM 0.9.2 before 0.24.0 SSRF via X-Request-Id in P2pNcclConnectorSame vllm-project/vllm package
  • vLLM 0.10.2 before 0.25.0 DoS via Nemotron-VL Processor Decompression-Bomb Guard BypassSame vllm-project/vllm package
  • vLLM 0.20.0 before 0.30.0 DoS via /inference/v1/generate mm_placeholdersSame vllm-project/vllm package

Record context

Vulnerability class
Secret Exfiltration
EPSS
Not reported
CWE IDs
CWE-20
Source
CVE List V5
Source checked
Oct 25, 2026
References
2 linked sources
Open source record