# CVE-2026-103916: Docker Sandboxes sbx cp follows workspace symlinks outside the authorized host directory

> CVE-2026-103916: Docker Sandboxes sbx cp follows workspace symlinks outside the authorized host directory. CVSS 8.4 (CVSS 4.0).

Canonical: https://rewindex.com/cve/CVE-2026-103916
Last updated: 2026-11-03T20:32:50Z

- Published: 2026-11-03 16:19 UTC · Updated: 2026-11-03 20:32 UTC · Assigner: Docker
- CVSS: 8.4 (CVSS 4.0) · Severity: High
- EPSS: 0.21%, 11th percentile (scored 2026-11-04)
- CISA KEV: no
- CWE: CWE-59

## 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.

## Affected vendors and products

- Docker: Docker Sandboxes

## Tracked companies

- [Docker](https://rewindex.com/company/docker.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-103916)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-103916)
- [https://docs.docker.com/ai/sandboxes/](https://docs.docker.com/ai/sandboxes/)
- [https://docs.docker.com/ai/sandboxes/security/isolation/](https://docs.docker.com/ai/sandboxes/security/isolation/)
- [https://github.com/docker/sbx-releases/releases/tag/v0.51.0](https://github.com/docker/sbx-releases/releases/tag/v0.51.0)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-103916 · Markdown: https://rewindex.com/cve/CVE-2026-103916.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-103916 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T10:25:37.270Z