Vulnerability · Published Nov 3, 2026 · Assigned by Docker
CVE-2026-103916Docker Sandboxes sbx cp follows workspace symlinks outside the authorized host directory
High 8.4
In plain English
A high-severity security flaw in Docker Sandboxes from Docker. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities).
Severity (CVSS 4.0)8.4High
Exploit odds (30 days)0.2%top 88.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Docker | Docker Sandboxes | 0.28.0 – before 0.51.0 |
Weakness: CWE-59 · 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
References
- https://docs.docker.com/ai/sandboxes/ product
- https://docs.docker.com/ai/sandboxes/security/isolation/ technical-description
- https://github.com/docker/sbx-releases/releases/tag/v0.51.0 release-notes