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Rule Reference

SEC625lintai-ai-securitystablejsonwarn

MCP config: bare Bash auto-approve

MCP configuration auto-approves bare `Bash` through `autoApprove`

Provider
lintai-ai-security
Surface
json
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
mcpmembership

Lifecycle

Stable Lifecycle Contract

State

stable_gated

Graduation rationale

Matches exact bare `Bash` auto-approval in MCP client config.

Deterministic signal basis

JsonSignals exact array-item detection for `autoApprove: ["Bash"]` on parsed MCP configuration.

Malicious corpus
mcp-autoapprove-unscoped-tool-family
Benign corpus
mcp-autoapprove-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

SEC301MCP config: shell trampolineMCP configuration shells out through sh -c or bash -cjsonstable
SEC302Config: insecure HTTP endpointConfiguration contains an insecure http:// endpointjsonstable
SEC303MCP config: credential env passthroughMCP configuration passes through credential environment variablesjsonstable
SEC304Config: TLS verification disabledConfiguration disables TLS or certificate verificationjsonstable
SEC305Config: hardcoded auth materialConfiguration embeds static authentication material in a connection or auth valuejsonstable
SEC309Config: literal secrets in configConfiguration commits literal secret material in env, auth, or header valuesjsonstable

SEC625 / MCP-AUTOAPPROVE-BASH ​

SEC625 flags MCP configuration when autoApprove contains the exact bare tool token Bash.

Why It Matters ​

Bare Bash auto-approval grants unreviewed shell execution authority without narrowing execution to reviewed commands.

Trigger Shape ​

This rule matches parsed McpConfig content where autoApprove contains the exact string Bash.

How To Fix ​

Replace bare Bash auto-approval with narrower reviewed command scopes such as Bash(git ls-remote:*), or remove shared shell auto-approval entirely.