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Claude Code v2.1.321 closed 5 gaps in permissions and hooks: what to check in your setup

Claude Code v2.1.321, released on 9 November 2026, fixes five security-relevant gaps: MCP OAuth refresh tokens sent to another host on a redirect, a read-only Bash command running outside the sandbox, deny rules missing files written by cp or mv into a folder, a lost PreToolUse ask , and mcp_tool h…

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  1. 2026-11-11 13:30 · DEV Community — AI
    Claude Code v2.1.321 closed 5 gaps in permissions and hooks: what to check in your setup

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