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CVE-2026-103241

vllm-project vLLM Gemma4UnifiedParser gemma4.rs denial of service

vllm-project vLLM
Open in ThreatlineRecord JSON
CVSS
6.9Medium
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 2 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.71%Chance of exploitation activity in the next 30 days, higher than 53% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published30 Sep 2026Updated 2 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Description

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.

Text from CVE List

Affected versions 27

  • vLLMaffected: 0.1CVE List
  • vLLMaffected: 0.2CVE List
  • vLLMaffected: 0.3CVE List
  • vLLMaffected: 0.4CVE List
  • vLLMaffected: 0.5CVE List
  • vLLMaffected: 0.6CVE List
  • vLLMaffected: 0.7CVE List
  • vLLMaffected: 0.8CVE List
  • vLLMaffected: 0.9CVE List
  • vLLMaffected: 0.10CVE List
  • vLLMaffected: 0.11CVE List
  • vLLMaffected: 0.12CVE List
  • vLLMaffected: 0.13CVE List
  • vLLMaffected: 0.14CVE List
  • vLLMaffected: 0.15CVE List
  • vLLMaffected: 0.16CVE List
  • vLLMaffected: 0.17CVE List
  • vLLMaffected: 0.18CVE List
  • vLLMaffected: 0.19CVE List
  • vLLMaffected: 0.20CVE List
  • vLLMaffected: 0.21CVE List
  • vLLMaffected: 0.22CVE List
  • vLLMaffected: 0.23CVE List
  • vLLMaffected: 0.24CVE List
  • vLLMaffected: 0.25CVE List
  • vLLMaffected: 0.26.0CVE List
  • vLLMunaffected: 0.29.1rc0CVE List

References 10