---
title: "Claude Code v2.1.187 Released: Security Enhancements and Numerous Bug Fixes"
source: "Claude Code：GitHub Releases（RSS）"
source_tier: "t1_5"
url: "https://github.com/anthropics/claude-code/releases/tag/v2.1.187"
permalink: "https://feed.astralor.com/items/itm_8181476b540c17cc18273e2a"
published: "2026-06-23T21:03:48.000Z"
score: 67
channel: "ai"
tags: ["Anthropic","Bug Fixes","Claude Code","Security Enhancement"]
---

# Claude Code v2.1.187 Released: Security Enhancements and Numerous Bug Fixes

## At a glance

Claude Code v2.1.187 introduces sandbox credential blocking for enhanced security, org-configured model restrictions, and fixes over a dozen critical issues including model re-call loops, remote MCP timeouts, Korean/CJK text mojibake, agent view stuck background jobs, significantly improving developer experience and stability.

## Key points

- New sandbox.credentials setting blocks sandboxed commands from reading credential files and secret env vars
- Org-configured model restrictions now shown in model picker, --model, /model, and ANTHROPIC_MODEL
- Fixed StructuredOutput infinite re-call after success; follow-up turns reliably return structured output
- Fixed remote MCP tool hangs after 5 min, Korean/CJK paste mojibake, agent view stuck background jobs, and more

## Full text

What's changed Added sandbox.credentials setting to block sandboxed commands from reading credential files and secret environment variables Added org-configured model restrictions to the model picker, --model, /model, and ANTHROPIC_MODEL, with a "restricted by your organization's settings" message when a restricted model is selected Added mouse click support to select menus (permission prompts, /model, /config, etc.) in fullscreen mode Fixed --resume failing with "No conversation found" when the original -p run produced no model turns Fixed --json-schema and workflow agent({schema}) structured output: the model can no longer re-call StructuredOutput indefinitely after a successful call, and follow-up turns now reliably return structured output Fixed remote MCP tool calls that hang with no response for 5 minutes — they now abort with an error instead of blocking indefinitely (override with CLAUDE_CODE_MCP_TOOL_IDLE_TIMEOUT) Fixed Claude Code Remote sessions taking ~2.7s longer to start after the agent proxy CA system-trust install was added Fixed pasted Korean/CJK text turning into mojibake in terminals that deliver paste as per-byte extended-key events Fixed /update over Remote Control hanging when a startup trust dialog would have shown Fixed background jobs in the agents view getting stuck in "working" indefinitely when the agent ended a turn without producing structured output Fixed channel connections dropping after navigating to the agents view and back, and after /bg, /tui, or /update Fixed agent stop notifications not correctly attributing who stopped the agent, and improved wording ("finished"/"stopped" instead of "came to rest") Fixed subagent depth tracking: resumed subagents now restore their original spawn depth, and forked subagents now count toward the depth cap Fixed leaked agent worktree registrations: locked .git/worktrees/ entries from killed agents are now cleaned up automatically Fixed Cmd+click not opening URLs in fullscreen mode in Ghostty on macOS Fixed claude --help not listing the --bg/--background flag Fixed Esc, Ctrl-C, and Ctrl-D not working while /share is uploading Improved /install-github-app: GitHub Actions workflow setup is now optional — you can install just the GitHub App and skip the workflow/secret steps Improved /btw with ←/→ arrow navigation to step through earlier answers Improved /plugin to surface plugins you haven't used recently so you can clean them up [VSCode] Fixed extension becoming unresponsive when resuming a large session

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