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archive/Patch now/AIR-2026-1391
closedclosed 16 Sep 2026Patch now2 Disclosed vulnerabilityAI

vLLM MoRIIO Acknowledgement Handler Resource Consumption Vulnerability

vLLM

A resource consumption vulnerability exists in vLLM versions 0.26.0 and 0.27.0 within the MoRIIO acknowledgement handler. Remote attackers can manipulate request parameters to cause excessive resource consumption, though no exploitation is confirmed yet.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
6.9
EPSS
0.01 · top 47% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
16 Sep 2026
last update
16 Sep 2026
CVE ids
CVE-2026-92220other records

Timeline · 1

  1. 16 Sep 2026CVE-2026-92220: A vulnerability was found in vllm-project vLLM 0.26.0/0.27.0.

Sources · 1

Advisories and databases

  1. 2026-09-16
    CVE-2026-92220: A vulnerability was found in vllm-project vLLM 0.26.0/0.27.0.
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-92220

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerability
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Framework / tooling
owasp llm top 10
LLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
vllmdenial-of-service
dates
happened 16 Sep 2026 · first reported 16 Sep 2026
origin
NVD
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-10-18 10:04Z · updated 2026-10-18 10:04Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# vLLM MoRIIO Acknowledgement Handler Resource Consumption Vulnerability

https://gcdradar.vercel.app/incidents/vllm-moriio-acknowledgement-handler-resource-consumption-vul · AIR-2026-1391 · closed 2026-09-16

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-09-16
- AI role: Attack on AI
- Products: vLLM
- CVE ids: CVE-2026-92220
- CVSS: 6.9

## Summary

A resource consumption vulnerability exists in vLLM versions 0.26.0 and 0.27.0 within the MoRIIO acknowledgement handler. Remote attackers can manipulate request parameters to cause excessive resource consumption, though no exploitation is confirmed yet.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-09-16: CVE-2026-92220: A vulnerability was found in vllm-project vLLM 0.26.0/0.27.0. (https://nvd.nist.gov/vuln/detail/CVE-2026-92220)

## Sources

- 2026-09-16 NVD: CVE-2026-92220: A vulnerability was found in vllm-project vLLM 0.26.0/0.27.0. https://nvd.nist.gov/vuln/detail/CVE-2026-92220

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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