TI-2026-80190 Aliases CVE-2026-116172 GHSA-2hvf-qprp-xr9w

Denial of service in vLLM Rust gRPC converter via top_n

LOW 36CWE-20Published 2026-10-25 · Updated 2026-11-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: High
Attack requirements: Present
Impact type: —
Confidentiality · integrity · availability: None · None · High
Fix status: Partial Red Hat: 3 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.

Summary

vLLM from 0.22.0 before 0.24.0 contains improper input validation (CWE-20) in its Rust gRPC converter. Remote attackers can bypass max_logprobs limits through CandidateTokens.top_n, so oversized or integer-wrapping values make torch.topk fail and terminate EngineCore. An unauthenticated remote attacker can trigger this by sending Generate or GenerateStream requests.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

vLLM from 0.22.0 before 0.24.0 contains an improper input validation vulnerability in the Rust gRPC converter that allows remote attackers to bypass max_logprobs limits via CandidateTokens.top_n. Attackers can send Generate or GenerateStream requests with oversized or integer-wrapping top_n values to trigger torch.topk failures that terminate EngineCore.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00339 27th percentileScored 2026-11-07

Fix Partial vllm (vllm-project): 0.24.0Red Hat: 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
vllm-project	vllm	0.22.0 to before 0.24.0	0.24.0	Patch available	CNA

vllm Vendorvllm-project Affected 0.22.0 to before 0.24.0 Fixed in 0.24.0 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:vllm:vllm::::::::	0.22.0 to before 0.24.0	Vulnerable	vLLM

cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:* Versions 0.22.0 to before 0.24.0 Vulnerable ·vLLM

Remediation

Upgrade vLLM to version 0.24.0. Red Hat gives no fix plan for Red Hat AI Inference Server, Red Hat Enterprise Linux AI (RHEL AI) 3 and Red Hat OpenShift AI (RHOAI).

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Fix · CNA vllm (vllm-project) Fixed in 0.24.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-10-25
vllm-project vllm 0.24.0
5 records Highest priority Priority MEDIUM 1 MEDIUM, 4 LOW
Other records, highest priority first
- TI-2026-80194 Server-side request forgery in vLLM P2pNcclConnector via X-Request-IdPriority MEDIUM 44
- TI-2026-80191 Denial of service in vLLM via crafted gRPC logprob token requestsPriority LOW 36
- TI-2026-80192 Denial of service in vLLM via Rust gRPC Generate requestsPriority LOW 35
Show all 5 records →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat AI Inference Server	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux AI (RHEL AI) 3	Affected	No fix yet: Fix deferred
Red Hat OpenShift AI (RHOAI)	Affected	No fix yet: Fix deferred

Timeline

2026-10-25 Threatist record created from CVE-2026-116172
2026-10-25 Affected versions changed · Red Hat
2026-10-25 CVSS score added · Red Hat
2026-10-26 Priority changed: MEDIUM → LOW
2026-10-27 Alias added: GHSA-2hvf-qprp-xr9w
2026-10-28 CVSS score added · NVD
2026-11-04 CISA SSVC decision points changed

References

Advisory 1

GitHub Security Advisory (GHSA-rwfw-xvg3-3937)

TI-2024-10229 Remote Code Execution in vllm-project/vllm CVSS 3.0CRITICAL 9.8
TI-2024-08404 Remote Code Execution in vllm-project/vllm CVSS 3.1CRITICAL 9.8
TI-2026-36017 vLLM: OpenAI auth bypass CVSS 3.1CRITICAL 9.1
TI-2026-63056 vLLM before 0.28.0 Denial of Service via negative token ID CVSS 4.0HIGH 8.7
TI-2026-04308 Hardcoded trust_remote_code=True in vllm-project/vllm Bypasses User Security Control CVSS 3.0HIGH 8.8
TI-2026-39137 vLLM: Remote DoS in vLLM via Invalid Recovered Token Reinjection CVSS 3.1HIGH 7.5

See all 124 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences