TI-2026-84402 Aliases CVE-2026-103916 GHSA-82h2-77xp-45m9

Docker Sandboxes sbx cp follows workspace symlinks outside the host directory

LOW 36CWE-59Published 2026-11-03 · Updated 2026-11-03

Key facts

Attack vector: Local
Privileges required: None
User interaction: Active
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Docker Sandboxes from 0.28.0 before 0.51.0 does not safely confine host-side paths used by sbx cp to a shared workspace. A malicious sandbox can create or replace a workspace symlink, so a later copy initiated by a user with the invoking user's permissions reads or writes host files outside the workspace. The flaw is classified as CWE-59, improper link resolution before file access. Exploitation requires a local attacker with a sandbox and a user action, and the sources do not report known exploitation.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0021 11th percentileScored 2026-11-07

Fix Fixed Docker Sandboxes (Docker): 0.51.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

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 Sandboxes	0.28.0 to before 0.51.0	0.51.0	Patch available	CNA

Docker Sandboxes VendorDocker Affected 0.28.0 to before 0.51.0 Fixed in 0.51.0 Patch available CNA

CPE names CNA · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:docker:docker_sandboxes::::::::	—	—	Docker

cpe:2.3:a:docker:docker_sandboxes:*:*:*:*:*:*:*:* Versions — — ·Docker

Remediation

Upgrade Docker Sandboxes to version 0.51.0 or later, which is the fixed version listed for this product.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Fix · CNA Docker Sandboxes (Docker) Fixed in 0.51.0

Timeline

2026-11-03 Threatist record created from CVE-2026-103916
2026-11-03 CISA SSVC decision points changed
2026-11-03 Priority changed: MEDIUM → LOW
2026-11-03 Alias added: GHSA-82h2-77xp-45m9

References

Other 3

TI-2019-11833 Docker Desktop Community Edition before 2.1.0.1 allows local users to gain privileges by… KEVCVSS 3.1HIGH 7.8
TI-2019-04061 runc through 1.0-rc6, as used in Docker before 18.09.2 and other products, allows… CVSS 3.1HIGH 8.6
TI-2025-08316 Docker Desktop allows unauthenticated access to Docker Engine API from containers CVSS 4.0CRITICAL 9.3
TI-2025-02823 Elevation of Privilege in Docker Desktop for Windows during Upgrade due to Insecure Directory Deletion CVSS 4.0HIGH 7.3
TI-2026-14229 Tar extraction in moby/go-archive can write outside the destination directory via link following CVSS 4.0HIGH 7.1
TI-2023-21271 Docker Machine through 0.16.2 allows an attacker, who has control of a worker node, to… CVSS 3.1MEDIUM 6.5

See all 132 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences