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CVE-2026-44222

🔶 medium
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Summary

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. Multi

Description

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 Score
6.5
Medium
EPSS Score
0.0
Exploit Probability
Published Date
2026-05-12
First Seen: 2026-05-17
📊 Relative Risk Intelligence

This CVE is Lower Risk - more severe than 47.8% of all 326,604 vulnerabilities in our database.

#170,379
Below average severity
Severity Percentile
🎯 CISA SSVC Assessment Updated: May 13, 2026
🔍 Exploitation Status
None
No known exploits
⚙️ Automatable
NO
Requires human interaction
💥 Technical Impact
Partial
Limited system impact
SSVC data provided by CISA
Last Modified 2026-05-14
Source NVD 🔗
CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE IDs (Weakness Types)
CWE-129

📦 Affected Products 1

Vendor Product Status Affected Versions
vllm vllm Affected
> 0.6.1 < 0.20.0

🔗 References 2

https://github.com/vllm-project/vllm/issues/32656
Issue Tracking
https://github.com/vllm-project/vllm/security/adviso...
Exploit Vendor Advisory

🔗 Related CVEs 6

CVE ID Severity CVSS EPSS Summary Published
CVE-2026-44223 🔶 medium 6.5 0.0 vLLM is an inference and serving engine for large language models (LLMs). From to before 0.20.0, the extract_hidden_sta... 2026-05-12
CVE-2026-7141 🔶 medium 5.6 0.1 A vulnerability was found in vllm up to 0.19.0. The affected element is the function has_mamba_layers of the file vllm/v... 2026-04-27
CVE-2026-34753 🔶 medium 5.4 0.0 vLLM is an inference and serving engine for large language models (LLMs). From 0.16.0 to before 0.19.0, a server-side re... 2026-04-06
CVE-2026-34755 🔶 medium 6.5 0.1 vLLM is an inference and serving engine for large language models (LLMs). From 0.7.0 to before 0.19.0, the VideoMediaIO.... 2026-04-06
CVE-2026-34756 🔶 medium 6.5 0.0 vLLM is an inference and serving engine for large language models (LLMs). From 0.1.0 to before 0.19.0, a Denial of Servi... 2026-04-06
CVE-2026-34760 🔶 medium 5.9 0.1 vLLM is an inference and serving engine for large language models (LLMs). From version 0.5.5 to before version 0.18.0, L... 2026-04-02
These CVEs affect the same products