TL;DR Docker issued a patch for critical Docker Sandboxes vulnerabilities, including CVE-2026-77179 and CVE-2026-79994. These flaws enable malicious guests to escape isolated microVM workspaces and interact with the host system. Administrators must update to version 0.42.0 immediately to prevent potential host code execution. Why It Matters Developers use Docker Sandboxes to run AI coding agents inside isolated environments. These sandboxes utilize dedicated Docker daemons and filesystems.