CVE-2026-105775

vllm-project vLLM Completions Request mamba_mixer2.py conv_ssm_forward out-of-bounds

Published Oct 6, 2026 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed

Description

A security vulnerability has been detected in vllm-project vLLM up to 0.31.0. This impacts the function conv_ssm_forward of the file vllm/model_executor/layers/mamba/mamba_mixer2.py of the component Completions Request Handler. The manipulation leads to out-of-bounds read. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Affected Products

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`	affected	—
`0.27`	affected	—
`0.28`	affected	—
`0.29`	affected	—
`0.30`	affected	—
`0.31.0`	affected	—

No data.

Vendor Product Versions

Vllm-project

Vllm

Version	Status	Scheme	Platform
`0.1`	affected	semver	—
`0.2`	affected	semver	—
`0.3`	affected	semver	—
`0.4`	affected	semver	—
`0.5`	affected	semver	—
`0.6`	affected	semver	—
`0.7`	affected	semver	—
`0.8`	affected	semver	—
`0.9`	affected	semver	—
`0.10`	affected	semver	—
`0.11`	affected	semver	—
`0.12`	affected	semver	—
`0.13`	affected	semver	—
`0.14`	affected	semver	—
`0.15`	affected	semver	—
`0.16`	affected	semver	—
`0.17`	affected	semver	—
`0.18`	affected	semver	—
`0.19`	affected	semver	—
`0.20`	affected	semver	—
`0.21`	affected	semver	—
`0.22`	affected	semver	—
`0.23`	affected	semver	—
`0.24`	affected	semver	—
`0.25`	affected	semver	—
`0.26`	affected	semver	—
`0.27`	affected	semver	—
`0.28`	affected	semver	—
`0.29`	affected	semver	—
`0.30`	affected	semver	—
`0.31.0`	affected	semver	—

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

No advisories available

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required Low

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 Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.296% probability within 30 days)

Exploitation poc

Automatable no

Technical Impact partial

References

Link	Providers
https://github.com/vllm-project/vllm/
https://github.com/vllm-project/vllm/issues/57266
https://nvd.nist.gov/vuln/detail/CVE-2026-105775
https://vuldb.com/cve/CVE-2026-105775
https://vuldb.com/submit/992291
https://vuldb.com/vuln/413808
https://vuldb.com/vuln/413808/cti
https://www.cve.org/CVERecord?id=CVE-2026-105775

History

Oct 9, 2026 1:30 AM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Oct 6, 2026 12:15 PM Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
References		https://nvd.nist.gov/vuln/detail/CVE-2026-105775 https://www.cve.org/CVERecord?id=CVE-2026-105775
Metrics	threat_severity `None`	threat_severity `Moderate`

Oct 6, 2026 6:00 AM Description updated. Title updated. First appearance in the feed. Weaknesses updated. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		A security vulnerability has been detected in vllm-project vLLM up to 0.31.0. This impacts the function conv_ssm_forward of the file vllm/model_executor/layers/mamba/mamba_mixer2.py of the component Completions Request Handler. The manipulation leads to out-of-bounds read. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Title		vllm-project vLLM Completions Request mamba_mixer2.py conv_ssm_forward out-of-bounds
First Time appeared		Vllm-project Vllm-project vllm
Weaknesses		CWE-119 CWE-125
CPEs		cpe:2.3:a:vllm-project:vllm::::::::
Vendors & Products		Vllm-project Vllm-project vllm
References		https://github.com/vllm-project/vllm/ https://github.com/vllm-project/vllm/issues/57266 https://vuldb.com/cve/CVE-2026-105775 https://vuldb.com/submit/992291 https://vuldb.com/vuln/413808 https://vuldb.com/vuln/413808/cti
Metrics		cvssV2_0 `{'score': 4, 'vector': 'AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:C'}` cvssV3_0 `{'score': 4.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:C'}` cvssV3_1 `{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:C'}` cvssV4_0 `{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P'}`