Docker Model Runner container-to-host code execution via MLX-LM model_file importlib loading
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-829.
Summary
The MLX inference backend in Docker Model Runner on macOS uses the MLX-LM library, which unconditionally imports and executes arbitrary Python files from model directories via the model_file configuration field in config.json. When a model's config.json specifies a model_file pointing to a Python file, MLX-LM uses importlib to load and execute it with no trust_remote_code gate or equivalent safety check. The MLX backend runs without sandboxing, resulting in arbitrary code execution on the Docker host as the Docker Desktop user. Any container on the Docker network can trigger this by calling the model-runner.docker.internal API to pull a malicious model from an attacker-controlled OCI registry and request inference.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Docker | Docker Desktop | 4.56.0 to before 4.71.0 | 4.71.0 | Patch available | CNA |
- Docker Desktop VendorDocker Affected 4.56.0 to before 4.71.0 Fixed in 4.71.0 Patch available CNA
Remediation
- Fix · CNA Docker Desktop (Docker) Fixed in 4.71.0
Timeline
- 2026-10-02 Threatist record created from CVE-2026-5843
- 2026-10-03 Alias added: GHSA-9m9w-53g9-47c4
References
More Docker Desktop vulnerabilities
- TI-2023-00593 Code injection in Docker Desktop CVSS 3.1CRITICAL 9.8
- TI-2023-00592 Cross-site scripting in Docker Desktop CVSS 3.1CRITICAL 9.8
- TI-2023-04753 Docker Desktop before 4.23.0 allows Enhanced Container Isolation bypass via debug shell CVSS 3.1HIGH 8.8
- TI-2026-05623 Docker Desktop Enhanced Container Isolation bypass via --use-api-socket CLI flag CVSS 4.0HIGH 8.8
- TI-2026-05098 Docker Model Runner container-to-host code execution via unsandboxed trust_remote_code in Python inference backends CVSS 4.0HIGH 8.8
- TI-2023-04754 Information disclosure in Docker Desktop CVSS 3.1HIGH 8.0
Sources
- CVE-2026-5843 · CVE Program
- CVE-2026-5843 · NVD
- FIRST EPSS
- GHSA-9m9w-53g9-47c4 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences