CVE-2026-116172

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.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/vllm-project/vllm/security/advisories/GHSA-rwfw-xvg3-3937	Mitigation Vendor Advisory
https://www.vulncheck.com/advisories/vllm-0.22.0-before-0.24.0-dos-via-rust-grpc-candidatetokens-top-n	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*

History

28 Oct 2026, 15:43

Type	Values Removed	Values Added
CPE		cpe:2.3:a:vllm:vllm::::::::
First Time		Vllm vllm Vllm
References	~~() https://github.com/vllm-project/vllm/security/advisories/GHSA-rwfw-xvg3-3937 -~~	() https://github.com/vllm-project/vllm/security/advisories/GHSA-rwfw-xvg3-3937 - Mitigation, Vendor Advisory
References	~~() https://www.vulncheck.com/advisories/vllm-0.22.0-before-0.24.0-dos-via-rust-grpc-candidatetokens-top-n -~~	() https://www.vulncheck.com/advisories/vllm-0.22.0-before-0.24.0-dos-via-rust-grpc-candidatetokens-top-n - Third Party Advisory

25 Oct 2026, 14:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-25 14:16

Updated : 2026-10-28 15:43

NVD link : CVE-2026-116172

Mitre link : CVE-2026-116172

CVE.ORG link : CVE-2026-116172

JSON object : View

Products Affected

vllm

vllm

CWE

CWE-20

Improper Input Validation

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