Vulnerability in Docker Sandboxes

CVE-2026-103916

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 · last modified 2026-11-03.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Docker Sandboxes

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

References

docs.docker.com/ai/sandboxes/ (product)
docs.docker.com/ai/sandboxes/security/isolation/ (technical-description)
github.com/docker/sbx-releases/releases/tag/v0.51.0 (release-notes)