Vulnerability DatabaseCVE-2026-116173
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CVE-2026-116173
Published:October 25, 2026
Updated:October 26, 2026
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.
Affected Packages
https://github.com/vllm-project/vllm.git (GITHUB):
Affected version(s) >=v0.22.0 <v0.24.0
Fix Suggestion:
Update to version v0.24.0
vllm (PYTHON):
Affected version(s) >=0.22.0 <0.24.0
Fix Suggestion:
Update to version 0.24.0
Related Resources (2)
https://www.vulncheck.com/advisories/vllm-0.22.0-before-0.24.0-denial-of-service-via-grpc-output-candidates-token-ids
https://github.com/vllm-project/vllm/security/advisories/GHSA-6pgw-f3pv-4h8q
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CVSS v4
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Improper Input Validation
CWE-20