Broken plugin hook blocks Edit/Write tools - missing cache file causes complete tool failure

[jacopone]

Bug Report: Broken plugin hook blocks Edit/Write tools

Description

When a plugin hook references a file that doesn't exist in the cache, all Edit/Write/MultiEdit tool operations are blocked with an error. The user cannot proceed with any file modifications until the session is restarted with the plugin disabled.

Error Message

PreToolUse:Callback hook blocking error from command: "callback": /run/current-system/sw/bin/python3: can't open file '/home/guyfawkes/.claude/plugins/cache/claude-plugins-official/security-guidance/6d3752c000e2/hooks/security_reminder_hook.py': [Errno 2] No such file or directory

Steps to Reproduce

1. Have a plugin installed that registers a PreToolUse hook (e.g., security-guidance@claude-plugins-official)
2. The plugin cache gets corrupted/deleted, or the plugin version changes leaving stale references
3. Try to use Edit, Write, or MultiEdit tools
4. All operations are blocked with "No such file or directory" error

Expected Behavior

• Claude Code should gracefully handle missing hook files (log warning, skip the hook)
• OR disabling the plugin in settings.json should take effect immediately without requiring session restart

Actual Behavior

• Tool operations are completely blocked
• Disabling the plugin in settings.json has no effect until session restart
• User is stuck and cannot make any file edits

Environment

• Claude Code version: Latest
• OS: NixOS Linux
• Plugin: security-guidance@claude-plugins-official

Workaround

1. Disable the plugin in ~/.claude/settings.json:

   "enabledPlugins": { "security-guidance@claude-plugins-official": false }

2. Exit and restart Claude Code session

Suggested Fix

1. Wrap hook execution in try-catch and gracefully handle missing files
2. Validate hook file existence before attempting to execute
3. Allow runtime plugin enable/disable without requiring restart

[github-actions]

Found 3 possible duplicate issues:

1. Plugin cache: CLAUDE_PLUGIN_ROOT points to stale version after plugin update #15642
2. [BUG] Plugin cache keeps old versions and runs their hooks! #15621
3. [BUG] /plugin update does not invalidate plugin cache #14061

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