CVE-2026-79994

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.

• https://docs.docker.com/ai/sandboxes/
• https://docs.docker.com/ai/sandboxes/security/isolation/
• https://github.com/docker/sailor/pull/2021
• https://github.com/docker/sandboxes/pull/5342
• https://github.com/docker/sbx-releases/releases/tag/v0.42.0