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Rule Reference

SEC631lintai-ai-securitystableclaude_settingswarn

Claude settings: bare Grep permissions

Claude settings permissions allow bare `Grep` in a shared committed config

Provider
lintai-ai-security
Surface
claude_settings
Scope
per_file
Tier
stable
Severity
warn
Confidence
high
Detection
structural
Remediation
message_only

Activation Model

Preset Membership

This rule is part of the builtin activation graph through these preset memberships.

previewmembership
claudemembership

Lifecycle

Stable Lifecycle Contract

State

stable_gated

Graduation rationale

Checks shared Claude settings permissions for exact bare `Grep` grants.

Deterministic signal basis

ClaudeSettingsSignals exact string detection for bare `Grep` inside permissions.allow on parsed Claude settings JSON.

Malicious corpus
claude-settings-unscoped-tool-family
Benign corpus
claude-settings-unscoped-tool-family-specific-safe
structured evidence required remediation reviewed
Canonical note

Structural stable rule intended as a high-precision check with deterministic evidence.

Nearby Signals

Related Rules

SEC362Claude settings: wildcard Bash permissionsClaude settings permissions allow `Bash(*)` in a shared committed configclaude_settingsstable
SEC364Claude settings: bypassPermissions default modeClaude settings set `permissions.defaultMode` to `bypassPermissions` in a shared committed configclaude_settingsstable
SEC367Claude settings: wildcard WebFetch permissionsClaude settings permissions allow `WebFetch(*)` in a shared committed configclaude_settingsstable
SEC369Claude settings: wildcard Write permissionsClaude settings permissions allow `Write(*)` in a shared committed configclaude_settingsstable
SEC372Claude settings: wildcard Read permissionsClaude settings permissions allow `Read(*)` in a shared committed configclaude_settingsstable
SEC373Claude settings: wildcard Edit permissionsClaude settings permissions allow `Edit(*)` in a shared committed configclaude_settingsstable

SEC631 / CLAUDE-GREP ​

SEC631 flags shared committed Claude settings when permissions.allow contains the exact bare tool token Grep.

Why It Matters ​

Bare Grep grants unreviewed content-search authority without narrowing searches to reviewed patterns or repository-scoped content.

Trigger Shape ​

This rule matches parsed Claude settings JSON where permissions.allow contains the exact string Grep.

How To Fix ​

Replace bare Grep with a narrower reviewed permission pattern such as Grep(todo:), or remove broad search access from the shared Claude settings file.