CVE-2026-116178

HighCVSS 7.5/10Last modified Oct 28, 2026

Description

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-20

Affected software

Vendor	Product	Versions
vllm-project	vllm	>= 0.20.0, < 0.30.0

References

https://github.com/vllm-project/vllm/security/advisories/GHSA-34qw-q2h2-jp3mPatch, Vendor Advisory
https://www.vulncheck.com/advisories/vllm-0.20.0-before-0.30.0-dos-via-inference-v1-generate-mm-placeholdersThird Party Advisory

Timeline

Published: Oct 25, 2026
Last modified: Oct 28, 2026
NVD status: Analyzed

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