vllm-project vLLM Gemma4UnifiedParser gemma4.rs denial of service
Summary
| CVE | CVE-2026-103241 |
|---|---|
| State | PUBLISHED |
| Assigner | VulDB |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-30 17:16:42 UTC |
| Updated | 2026-10-06 17:14:37 UTC |
| 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. |
Risk And Classification
Primary CVSS: v4.0 5.5 MEDIUM from [email protected]
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS: 0.006570000 probability, percentile 0.498060000 (date 2026-10-06)
Problem Types: CWE-404 | CWE-404 Denial of Service
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 5.5 | MEDIUM | 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/C... |
| 4.0 | CNA | DECLARED | 6.9 | MEDIUM | 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 |
| 3.1 | [email protected] | Primary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | [email protected] | Secondary | 5.3 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| 3.1 | CNA | DECLARED | 5.3 | MEDIUM | 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 |
| 3.0 | CNA | DECLARED | 5.3 | MEDIUM | 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 |
| 2.0 | [email protected] | Secondary | 5 | AV:N/AC:L/Au:N/C:N/I:N/A:P | |
| 2.0 | CNA | DECLARED | 5 | AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C |
CVSS v4.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowAttack Requirements
NonePrivileges Required
NoneUser Interaction
NoneConfidentiality
NoneIntegrity
NoneAvailability
LowSub Conf.
NoneSub Integrity
NoneSub Availability
NoneCVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v3.0 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
LowCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
NVD Known Affected Configurations (CPE 2.3)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Vllm-project | VLLM | affected 0.1 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.2 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.3 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.4 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.5 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.6 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.7 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.8 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.9 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.10 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.11 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.12 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.13 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.14 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.15 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.16 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.17 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.18 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.19 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.20 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.21 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.22 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.23 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.24 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.25 | Not specified |
| CNA | Vllm-project | VLLM | affected 0.26.0 | Not specified |
| CNA | Vllm-project | VLLM | unaffected 0.29.1rc0 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| vuldb.com/vuln/411965 | [email protected] | vuldb.com | Third Party Advisory, VDB Entry |
| vuldb.com/submit/956250 | [email protected] | vuldb.com | Third Party Advisory, VDB Entry |
| github.com/vllm-project/vllm/pull/54303 | [email protected] | github.com | Issue Tracking, Patch |
| github.com/vllm-project/vllm/issues/50927 | [email protected] | github.com | Issue Tracking, Patch |
| github.com/vllm-project/vllm/commit/3439bad37e68ba9755a46f4f6b44a4aeaf1f... | [email protected] | github.com | Patch |
| github.com/vllm-project/vllm/releases/tag/v0.29.1rc0 | [email protected] | github.com | Release Notes |
| gist.github.com/Yunzez/8e98d656aa667095b513161eb056d28e | [email protected] | gist.github.com | Product |
| vuldb.com/vuln/411965/cti | [email protected] | vuldb.com | Permissions Required, VDB Entry |
| github.com/vllm-project/vllm | [email protected] | github.com | Product |
| vuldb.com/cve/CVE-2026-103241 | [email protected] | vuldb.com | Third Party Advisory, VDB Entry |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Zyz3366 (VulDB User) (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-09-30T00:00:00.000Z | Advisory disclosed |
| CNA | 2026-09-30T02:00:00.000Z | VulDB entry created |
| CNA | 2026-09-30T12:42:01.000Z | VulDB entry last update |
There are currently no legacy QID mappings associated with this CVE.