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CVE-2026-6406— Docker Desktop Enhanced Container Isolation bypass via --use-api-socket CLI flag

Quick assessment

Affected
Docker Docker Desktop
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Docker Desktop是美国Docker公司的一个基于容器技术的用于轻量化部署应用的桌面软件。该产品可提供桌面环境可支持在Linux/Windows/Mac OS系统上创建一个容器（轻量级虚拟机）并部署和运行应用程序，以及通过配置文件实现应用程序的自动化安装、部署和升级。 Docker Desktop存在安全漏洞，该漏洞源于绕过增强容器隔离限制，可能导致本地攻击者通过添加Docker套接字挂载访问Docker引擎和认证凭据，提升权限。

CVSS 8.8 · High EPSS 0.20% · P9

Affected Version Matrix 1

VendorProduct Version RangeStatus
Docker Docker Desktop 4.41.0< 4.59.0 affected
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I. Basic Information for CVE-2026-6406

Vulnerability Information
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Vulnerability Title
Docker Desktop Enhanced Container Isolation bypass via --use-api-socket CLI flag
Source: CVE Program / CVE List V5
Vulnerability Description
The Docker CLI --use-api-socket flag bypasses Enhanced Container Isolation (ECI) restrictions in Docker Desktop. When ECI is enabled, Docker socket mounts from containers are denied unless explicitly allowed via the admin-settings configuration. However, the --use-api-socket flag adds the Docker socket mount via the HostConfig.Mounts field rather than the HostConfig.Binds field. The ECI enforcement in the Docker Desktop API proxy only inspected Binds, allowing the mount to pass unchecked. This grants a container full access to the Docker Engine socket and, if the host user has logged in to container registries, their authentication credentials. A local attacker with the ability to run Docker CLI commands can exploit this to escape ECI restrictions, access the Docker Engine, and potentially escalate privileges.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Docker Desktop 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Docker Desktop是美国Docker公司的一个基于容器技术的用于轻量化部署应用的桌面软件。该产品可提供桌面环境可支持在Linux/Windows/Mac OS系统上创建一个容器（轻量级虚拟机）并部署和运行应用程序，以及通过配置文件实现应用程序的自动化安装、部署和升级。 Docker Desktop存在安全漏洞，该漏洞源于绕过增强容器隔离限制，可能导致本地攻击者通过添加Docker套接字挂载访问Docker引擎和认证凭据，提升权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Docker Docker Desktop 4.41.0 ~ 4.59.0 -

II. Public POCs for CVE-2026-6406

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III. Intelligence Information for CVE-2026-6406

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Vendor Advisories for CVE-2026-6406 (1)

Other References for CVE-2026-6406 (1)

Same Patch Batch · Docker · 2026-05-22 · 3 CVEs total

CVE-2026-5817 8.2 HIGH Docker Model Runner container-to-host code execution via unsandboxed trust_remote_code in
CVE-2026-5843 8.2 HIGH Docker Model Runner container-to-host code execution via MLX-LM model_file importlib loadi

IV. Related Vulnerabilities

Same product: Docker Desktop
Same vendor: Docker
Same weakness: CWE-863

V. Comments for CVE-2026-6406

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