CVE-2026-5843

Container-to-host code execution via untrusted model import

Published May 22, 2026 · Updated May 22, 2026

Code execution in Docker Desktop 4.56.0 and later, before 4.71.0, allows local users to execute code on the macOS host. MLX-LM reads model_file from a model config.json and passes the referenced Python file to importlib without a trust gate, executing it outside a sandbox. Docker Model Runner must be enabled with the MLX backend, after which any container on its Docker network can pull a malicious model and execute code as the Docker Desktop user.

CVSS severity8.8
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code execution in Docker Desktop 4.56.0 and later, before 4.71.0, allows local users to execute code on the macOS host. MLX-LM reads model_file from a model config.json and passes the referenced Python file to importlib without a trust gate, executing it outside a sandbox. Docker Model Runner must be enabled with the MLX backend, after which any container on its Docker network can pull a malicious model and execute code as the Docker Desktop user.

The record

CVE
CVE-2026-5843
Published
May 22, 2026
Updated
May 22, 2026
Vendor
Docker
Product
Docker Desktop
Classifications
CWE-829, CAPEC-480, T1611
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 22, 2026CVE publishedPublication date reported by the CVE source.
  2. May 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.56.0 <4.71.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Docker · Docker Desktopversion=4.56.0 <4.71.0

Published CVSS scores

8.6NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
8.2DockerCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
8.8DockerCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-829Inclusion of Functionality from Untrusted Control Sphere
CAPEC-480Escaping Virtualization
T1611Escape to Host

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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