CVE-2026-77179

CVSS 9.4 (critical) · published 2026-09-15

On macOS, the virtio-fs host server used by Docker Sandboxes improperly follows symlinks when reopening an unlinked file from a stored path. A malicious guest can replace a parent directory with a symlink, escape the shared workspace, and read or modify arbitrary host files as the VMM user, potentially achieving host code execution.

Weakness: CWE-59

Source: NVD CVE-2026-77179

References

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

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