Claude Code v2.1.214 Released: Multiple Security Fixes and Performance Improvements

What's changed

• Fixed single-segment dir/** allow rules like Edit(src/**) auto-approving writes to nested dir/ directories anywhere in the tree instead of only <cwd>/dir
• Fixed a permission-check bypass affecting commands run in Windows PowerShell 5.1 sessions
• Fixed Bash permission checks to fail closed on file-descriptor redirect forms that bash parses differently than the permission analyzer
• Fixed Bash permission checks misjudging very long commands — commands over 10,000 characters now always prompt instead of running automatically
• Fixed Bash permission checks treating zsh variable subscripts and modifiers in [[ ]] comparisons as inert text — these commands now prompt for approval
• Fixed Bash permission checks to no longer auto-approve certain help and man commands that could run unsafe options, command substitutions, or backslash paths
• Fixed permission prompts on remote sessions that could proceed before the local confirmation dialog
• Added the EndConversation tool: Claude can end sessions with highly abusive users or jailbreak attempts, as on claude.ai since 2025 — see https://www.anthropic.com/research/end-subset-conversations
• Added a periodic progress heartbeat for long-running tool calls that previously went silent
• Added an ISO modified timestamp to memory file frontmatter
• Added message.uuid, client_request_id, and tool_source attributes to OpenTelemetry log events for message-level correlation and tool provenance
• Added CLAUDE_CODE_OTEL_CONTENT_MAX_LENGTH to configure the 60 KB truncation limit on OpenTelemetry content attributes
• Added reasoning effort to the subagentStatusLine payload, so custom agent rows can render model and effort
• Added permission prompts for docker commands (including the Podman docker shim) carrying daemon-redirect flags (--url, --connection, --identity, and Podman's remote mode) that previously ran without one
• Fixed a crash when a GrowthBook feature evaluates to null, and a bug where a malformed flag payload could wipe the cached feature flags
• Fixed Bash tool killing the Claude session when a pkill -f pattern accidentally matched the CLI's own process (Linux)
• Fixed unbounded memory growth when --settings points at a device file or multi-GB file; oversized (>2 MiB) settings files now fail at startup with a clear error
• Fixed streaming turns failing with "Socket is closed" behind corporate proxies on Windows
• Fixed stream-json output truncation at exit for slow-reading SDK/pipeline consumers; the exit drain now scales with queued bytes instead of a flat 2s cap
• Fixed scheduled tasks refusing their own configured prompt as untrusted input — the fired prompt is now delivered as the session's assigned task
• Fixed PowerShell tool commands hanging until timeout when a child process waited on standard input (Windows)
• Fixed Python scripts under the PowerShell tool crashing with UnicodeDecodeError when reading non-UTF-8 data from standard input (Windows)
• Fixed Python scripts run via the PowerShell tool crashing with UnicodeEncodeError on non-ASCII output, and PowerShell 7 error messages containing raw ANSI escape sequences (Windows)
• Fixed the PowerShell tool reporting where.exe, fc.exe, and diff.exe as errors when they return a valid negative answer (Windows)
• Fixed > and >> under the PowerShell tool on Windows PowerShell 5.1 writing UTF-16LE files that other tools couldn't read as UTF-8
• Fixed a displaced background daemon deleting its successor's control socket on shutdown, which made the next client kill the healthy replacement daemon
• Fixed background sessions parked with ← or /background and left idle keeping the background daemon and a worker process alive indefinitely
• Fixed completed background sessions being impossible to remove via claude rm or the agent view once the background service had gone idle
• Fixed background sessions dispatched from a non-git folder being impossible to delete from the agents view
• Fixed reopening a stopped background session failing to restore its saved conversation when an unreadable folder exists in the session store
• Fixed the Remote Control "session ready" push notification firing for sessions where Remote Control was not explicitly enabled
• Fixed /install-github-app and the /mcp settings menu being blocked in agent-view sessions — they're now refused only in background sessions with no terminal attached
• Fixed plugins enabled via the --settings CLI flag not loading (regression since v2.1.181)
• Fixed feature flags going stale in long-running sessions after the OAuth token rotates
• Fixed /ultrareview refusing to run in repos with no merge base — it now offers to review all tracked files
• Fixed claude update and claude doctor hanging silently, and the /status System diagnostics section going blank, when a shell-config path is a directory
• Fixed memory frontmatter values being silently truncated at an inline # when memory files are saved
• Fixed session cost and token telemetry double-counting on streams that emit multiple cumulative message_delta frames
• Fixed a spurious "check your network" warning that appeared while the advisor was thinking
• Fixed hooks with exit code 2 not blocking as documented when the hook's stdout JSON fails schema validation
• Fixed OTel log events emitted outside the turn's async context missing the interaction span's trace context
• Fixed MCP transient errors during prompts/resources refresh clearing the server's slash commands and resources
• Improved the claude rc workspace-trust error in the home directory to say trust there is never saved and to suggest running from a project directory
• Changed single-segment dir/** hook if: conditions to match only <cwd>/dir; write **/dir/** for any-depth matching. deny/ask permission rules keep their any-depth match.
• Changed file commands using -m/--magic-file or -f/--files-from to require permission instead of being auto-allowed as read-only
• Changed keep-alive connection pooling to disable after a stale-connection error, so retries open a fresh socket
• Changed SessionStart hooks to report source "fork" when a session begins as a fork instead of "resume"