CVE-2026-116178

vLLM from 0.20.0 before 0.30.0 contains a denial of service vulnerability that allows remote attackers to crash the engine by sending inconsistent multimodal metadata to the disaggregated /inference/v1/generate endpoint. Attackers can replay a valid multimodal item with repeated or overlapping mm_placeholders ranges or mismatched kwargs_data and mm_hashes lists, producing a negative text span in Qwen2.5-VL position construction that terminates the engine.

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-34qw-q2h2-jp3m	Patch Vendor Advisory
https://www.vulncheck.com/advisories/vllm-0.20.0-before-0.30.0-dos-via-inference-v1-generate-mm-placeholders	Third Party Advisory

Configurations

Configuration 1 (hide)

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

History

28 Oct 2026, 15:40

Type	Values Removed	Values Added
CPE		cpe:2.3:a:vllm:vllm::::::::
References	~~() https://github.com/vllm-project/vllm/security/advisories/GHSA-34qw-q2h2-jp3m -~~	() https://github.com/vllm-project/vllm/security/advisories/GHSA-34qw-q2h2-jp3m - Patch, Vendor Advisory
References	~~() https://www.vulncheck.com/advisories/vllm-0.20.0-before-0.30.0-dos-via-inference-v1-generate-mm-placeholders -~~	() https://www.vulncheck.com/advisories/vllm-0.20.0-before-0.30.0-dos-via-inference-v1-generate-mm-placeholders - Third Party Advisory
First Time		Vllm vllm Vllm

25 Oct 2026, 14:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-25 14:16

Updated : 2026-10-28 15:40

NVD link : CVE-2026-116178

Mitre link : CVE-2026-116178

CVE.ORG link : CVE-2026-116178

JSON object : View

Products Affected

vllm

vllm

CWE

CWE-20

Improper Input Validation

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