LaunchDevelopersAugust 4, 2026

Claude Code 2.1.222 fixes sandbox bypasses, adds cross-session messaging

Claude Code 2.1.222 fixes worktree-isolated sessions letting subagents run destructive git commands and PreToolUse auto-allow hooks bypassing tool restrictions in background agents. Adds cross-session messaging between sessions, sandbox credential masking (JWT, AWS SigV4), and Bash tool visibility into denied accesses.

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