gcdRadar
archive/Patch now/AIR-2026-0220
closedclosed 14 Oct 2026Patch now3 Confirmed exploitationAI

CVE-2026-103241: Denial of service vulnerability in vLLM

vLLM

A flaw in vLLM allows remote attackers to cause a denial of service via a vulnerability in the Gemma4 parser. An exploit has been published, and users are advised to upgrade.

CVSS
5.5
EPSS
0.01 · top 46% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
30 Sep 2026
last update
30 Sep 2026
CVE ids
CVE-2026-103241other records

Timeline · 1

  1. 30 Sep 2026CVE-2026-103241: A flaw has been found in vllm-project vLLM up to 0.26.0.

Sources · 1

Advisories and databases

  1. 2026-09-30
    CVE-2026-103241: A flaw has been found in vllm-project vLLM up to 0.26.0.
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-103241

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
3 · Confirmed exploitation
fix status
Fix status unknown
targets
Framework / tooling
owasp llm top 10
LLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
denial-of-servicevllm
dates
happened 30 Sep 2026 · first reported 30 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 06:33Z · updated 2026-10-18 06:33Z

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
# CVE-2026-103241: Denial of service vulnerability in vLLM

https://gcdradar.vercel.app/incidents/cve-2026-103241-denial-of-service-vulnerability-in-vllm · AIR-2026-0220 · closed 2026-10-14

- Lane: Patch now
- Severity: 3 (Confirmed exploitation)
- Fix status: Fix status unknown
- First reported: 2026-09-30
- AI role: Attack on AI
- Products: vLLM
- CVE ids: CVE-2026-103241
- CVSS: 5.5

## Summary

A flaw in vLLM allows remote attackers to cause a denial of service via a vulnerability in the Gemma4 parser. An exploit has been published, and users are advised to upgrade.

## What to do

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

## Latest updates

- 2026-09-30: CVE-2026-103241: A flaw has been found in vllm-project vLLM up to 0.26.0. (https://nvd.nist.gov/vuln/detail/CVE-2026-103241)

## Sources

- 2026-09-30 NVD: CVE-2026-103241: A flaw has been found in vllm-project vLLM up to 0.26.0. https://nvd.nist.gov/vuln/detail/CVE-2026-103241

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

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