Description
Docker Sandboxes sbx cp does not safely confine host-side paths to a shared workspace. A malicious sandbox can create or replace a workspace symlink so that a later user-initiated copy reads a host file outside the workspace into the sandbox or writes sandbox-controlled data to a host path outside the workspace with the invoking user's permissions.
Published: 2026-11-03
Score: 8.4 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

Upgrade Docker Sandboxes to version 0.51.0 or later.

Vendor Workaround

Until upgrading, do not use sbx cp with a host-side source or destination inside a workspace writable by untrusted sandbox code. Use a host-only path for the copy instead.

Tracking

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Advisories

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History

Tue, 03 Nov 2026 16:30:00 +0000

Type Values Removed Values Added
Description Docker Sandboxes sbx cp does not safely confine host-side paths to a shared workspace. A malicious sandbox can create or replace a workspace symlink so that a later user-initiated copy reads a host file outside the workspace into the sandbox or writes sandbox-controlled data to a host path outside the workspace with the invoking user's permissions.
Title Docker Sandboxes sbx cp follows workspace symlinks outside the authorized host directory
First Time appeared Docker
Docker docker Sandboxes
Weaknesses CWE-59
CPEs cpe:2.3:a:docker:docker_sandboxes:*:*:*:*:*:*:*:*
Vendors & Products Docker
Docker docker Sandboxes
References
Metrics cvssV4_0

{'score': 8.4, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

Docker Docker Sandboxes
cve-icon MITRE

Status: PUBLISHED

Assigner: Docker

Published:

Updated: 2026-11-03T16:19:03.726Z

Reserved: 2026-10-01T14:18:13.769Z

Link: CVE-2026-103916

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses