# CVE-2026-79994: Docker Sandboxes UDS forwarder can reach arbitrary host Unix sockets through a symlink race

> CVE-2026-79994: Docker Sandboxes UDS forwarder can reach arbitrary host Unix sockets through a symlink race. CVSS 8.7 (CVSS 4.0).

Canonical: https://rewindex.com/cve/CVE-2026-79994
Last updated: 2026-09-16T20:38:33Z

- Published: 2026-09-15 20:33 UTC · Updated: 2026-09-16 20:38 UTC · Assigner: Docker
- CVSS: 8.7 (CVSS 4.0) · Severity: High
- EPSS: 0.14%, 3th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-367

## Description

The guest-to-host Unix-domain socket relay in Docker Sandboxes validates that a socket path is inside an authorized workspace, but later reconnects using the pathname. A malicious guest can replace an intermediate directory with a symlink between validation and connection, causing the host to connect to an arbitrary AF\_UNIX socket outside the shared workspace. This can expose data or host-side capabilities provided by the targeted socket.

## 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-2026-79994)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-79994)
- [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/sailor/pull/2021](https://github.com/docker/sailor/pull/2021)
- [https://github.com/docker/sandboxes/pull/5342](https://github.com/docker/sandboxes/pull/5342)
- [https://github.com/docker/sbx-releases/releases/tag/v0.42.0](https://github.com/docker/sbx-releases/releases/tag/v0.42.0)

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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-2026-79994 · Markdown: https://rewindex.com/cve/CVE-2026-79994.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-79994 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:13:06.996Z