CVE-2026-44222

vLLM is an inference and serving engine for large language models (LLMs). From 0.6.1 to before 0.20.0, there is a a Token Injection vulnerability in vLLM’s multimodal processing. Unauthenticated, text-only prompts that spell special tokens are interpreted as control. Image and video placeholder sequences supplied without matching data cause vLLM to index into empty grids during input-position computation, raising an unhandled IndexError and terminating the worker or degrading availability. Multimodal paths that rely on image_grid_thw/video_grid_thw are affected. This vulnerability is fixed in 0.20.0.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/vllm-project/vllm/issues/32656	Issue Tracking
https://github.com/vllm-project/vllm/security/advisories/GHSA-hpv8-x276-m59f	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

14 May 2026, 15:38

Type	Values Removed	Values Added
CPE		cpe:2.3:a:vllm:vllm::::::::
First Time		Vllm vllm Vllm
References	~~() https://github.com/vllm-project/vllm/issues/32656 -~~	() https://github.com/vllm-project/vllm/issues/32656 - Issue Tracking
References	~~() https://github.com/vllm-project/vllm/security/advisories/GHSA-hpv8-x276-m59f -~~	() https://github.com/vllm-project/vllm/security/advisories/GHSA-hpv8-x276-m59f - Exploit, Vendor Advisory

12 May 2026, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-12 20:16

Updated : 2026-05-14 15:38

NVD link : CVE-2026-44222

Mitre link : CVE-2026-44222

CVE.ORG link : CVE-2026-44222

JSON object : View

Products Affected

vllm

vllm

CWE

CWE-129

Improper Validation of Array Index

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