---
id: CVE-2026-103241
title: A flaw has been found in vllm-project vLLM up to 0.26.0
summary: >-
  A flaw has been found in vllm-project vLLM up to 0.26.0. This vulnerability
  affects unknown code of the file rust/src/parser/src/unified/gemma4.rs of the
  component Gemma4UnifiedParser. Executing a manipulation can lead to denial of
  servi…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-404
vendor: vllm-project
product: vLLM
affected:
  - vLLM 0.1
  - vLLM 0.2
  - vLLM 0.3
  - vLLM 0.4
  - vLLM 0.5
  - vLLM 0.6
  - vLLM 0.7
  - vLLM 0.8
  - vLLM 0.9
  - vLLM 0.10
  - vLLM 0.11
  - vLLM 0.12
  - vLLM 0.13
  - vLLM 0.14
  - vLLM 0.15
  - vLLM 0.16
  - vLLM 0.17
  - vLLM 0.18
  - vLLM 0.19
  - vLLM 0.20
  - vLLM 0.21
  - vLLM 0.22
  - vLLM 0.23
  - vLLM 0.24
  - vLLM 0.25
  - vLLM 0.26.0
published: '2026-09-30'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T17:31:44.573'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-103241'
references:
  - url: 'https://gist.github.com/Yunzez/8e98d656aa667095b513161eb056d28e'
    label: cna@vuldb.com
  - url: 'https://github.com/vllm-project/vllm/'
    label: cna@vuldb.com
  - url: >-
      https://github.com/vllm-project/vllm/commit/3439bad37e68ba9755a46f4f6b44a4aeaf1f60a9
    label: cna@vuldb.com
  - url: 'https://github.com/vllm-project/vllm/issues/50927'
    label: cna@vuldb.com
  - url: 'https://github.com/vllm-project/vllm/pull/54303'
    label: cna@vuldb.com
  - url: 'https://github.com/vllm-project/vllm/releases/tag/v0.29.1rc0'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-103241'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/956250'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/411965'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/411965/cti'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-30T17:13:20.835Z'
---

## Overview

A flaw has been found in vllm-project vLLM up to 0.26.0. This vulnerability affects unknown code of the file rust/src/parser/src/unified/gemma4.rs of the component Gemma4UnifiedParser. Executing a manipulation can lead to denial of service. The attack may be launched remotely. The exploit has been published and may be used. Upgrading to version 0.29.1rc0 is able to resolve this issue. This patch is called 3439bad37e68ba9755a46f4f6b44a4aeaf1f60a9. Upgrading the affected component is advised.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.