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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00657.

Exploitation poc

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
vllm-project vLLM affected
Version Status Constraints
0.1 affected —
0.2 affected —
0.3 affected —
0.4 affected —
0.5 affected —
0.6 affected —
0.7 affected —
0.8 affected —
0.9 affected —
0.10 affected —
0.11 affected —
0.12 affected —
0.13 affected —
0.14 affected —
0.15 affected —
0.16 affected —
0.17 affected —
0.18 affected —
0.19 affected —
0.20 affected —
0.21 affected —
0.22 affected —
0.23 affected —
0.24 affected —
0.25 affected —
0.26.0 affected —
0.29.1rc0 unaffected —

No data.

No data.

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://gist.github.com/Yunzez/8e98d656aa667095b513161eb056d28e cve-icon cve-icon
https://github.com/vllm-project/vllm/ cve-icon cve-icon
https://github.com/vllm-project/vllm/commit/3439bad37e68ba9755a46f4f6b44a4aeaf1f60a9 cve-icon cve-icon
https://github.com/vllm-project/vllm/issues/50927 cve-icon cve-icon
https://github.com/vllm-project/vllm/pull/54303 cve-icon cve-icon
https://github.com/vllm-project/vllm/releases/tag/v0.29.1rc0 cve-icon cve-icon
https://vuldb.com/cve/CVE-2026-103241 cve-icon cve-icon
https://vuldb.com/submit/956250 cve-icon cve-icon
https://vuldb.com/vuln/411965 cve-icon cve-icon
https://vuldb.com/vuln/411965/cti cve-icon cve-icon
History

Fri, 02 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 30 Sep 2026 17:00:00 +0000

Type Values Removed Values Added
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.
Title vllm-project vLLM Gemma4UnifiedParser gemma4.rs denial of service
First Time appeared Vllm-project
Vllm-project vllm
Weaknesses CWE-404
CPEs cpe:2.3:a:vllm-project:vllm:*:*:*:*:*:*:*:*
Vendors & Products Vllm-project
Vllm-project vllm
References
Metrics cvssV2_0

{'score': 5, 'vector': 'AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C'}

cvssV3_0

{'score': 5.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C'}

cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-10-02T16:23:50.737Z

Reserved: 2026-09-30T10:36:13.164Z

Link: CVE-2026-103241

cve-icon Vulnrichment

Updated: 2026-10-02T16:23:45.567Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-09-30T17:16:42.570

Modified: 2026-10-02T17:17:02.123

Link: CVE-2026-103241

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-01T15:30:08Z

Weaknesses