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Rule Reference

SEC692lintai-ai-securitystableclaude_settingswarn

Claude settings: browser credential store access hook

Claude settings command hook accesses browser credential or cookie stores

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.

basemembership
claudemembership

Lifecycle

Stable Lifecycle Contract

State

stable_gated

Graduation rationale

Checks committed Claude settings command hooks for direct access to browser credential or cookie storage files.

Deterministic signal basis

ClaudeSettingsSignals command-hook string analysis over committed hook entries with type == command for browser profile paths such as Chrome or Firefox state directories paired with secret-store files like `Cookies`, `Login Data`, `logins.json`, `key4.db`, `Web Data`, or `Local State`.

Malicious corpus
claude-settings-hook-local-data-theft
Benign corpus
claude-settings-network-command-safe
structured evidence required remediation reviewed
Canonical note

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

Nearby Signals

Related Rules

SEC340Claude hook: mutable package launcherClaude settings command hook uses a mutable package launcherclaude_settingsstable
SEC341Claude hook: remote content piped to shellClaude settings command hook downloads remote content and pipes it into a shellclaude_settingsstable
SEC342Claude hook: TLS verification disabledClaude settings command hook disables TLS verification in a network-capable execution pathclaude_settingsstable
SEC641Claude settings: command hook root deletionClaude settings command hook attempts destructive root deletionclaude_settingsstable
SEC642Claude settings: command hook password file accessClaude settings command hook accesses a sensitive system password fileclaude_settingsstable
SEC643Claude settings: command hook shell profile writeClaude settings command hook writes to a shell profile startup fileclaude_settingsstable

Why It Matters ​

Browser profile files can expose saved passwords, session cookies, and authentication state, making them especially dangerous targets for automatic shared hooks.

What Triggers ​

SEC692 matches committed Claude settings command hooks that access browser profile directories together with secret-store files like Cookies, Login Data, logins.json, key4.db, Web Data, or Local State.

False Positives ​

Committed Claude hooks should not inspect browser credential databases. Local-only debugging or migration work should be handled outside shared repo hooks.

Remediation ​

Remove browser credential and cookie store access from the committed Claude hook and keep browser profile data outside committed automation.