@trypattern/sdk@0.1.9

AI Security Review

scanned 5d ago · by lpm-firewall-ai

The manifest declares no install lifecycle hook, and the flagged CLI behavior is reached through explicit user commands. Authentication targets the package’s service, publishing uploads project files as a requested operation, and the reviewed server and UI helpers show ordinary access checks and local behavior.

Static reason

High-risk behavior combination matched malicious policy.

Trigger

A user invokes the `app` CLI, such as for setup, login, or publishing.

Impact

No confirmed attack effect was established; the inspected operations are tied to explicit CLI actions and the package’s service endpoints.

Mechanism

Setup checks local tool versions and installs a user-level command shim; publishing sends project build and source files to the package dashboard after authentication.

AI rationale

Network endpoints2

auth.trypattern.aionpattern.app

Decision evidence

public snapshot

AI called this Clean at 96.0% confidence as Benign with low false-positive risk.

Evidence for AI clean decision

The manifest exposes an explicitly invoked CLI and declares development scripts, with no install lifecycle hook.
The CLI’s `.claude` reference is a formatter path; setup checks tool versions and installs a user-level shim when invoked.
Publishing ignores `.claude` when checking for an empty folder and uses a browser approval flow for saved dashboard credentials.
The publish command builds and uploads project files to the package’s dashboard as part of an explicit publish operation.
Server database access checks for an administrator, pattern-viewer access is limited to read requests, and keyset code paginates results.
The auth service sends requests to the package’s stated authentication service; theme-token and shortcut modules implement local tooling and UI behavior.

Evidence against

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetwork

Supply chain

Source & flagged code

8 flagged

dist/cli/publishing.jsView file

Lines 1-21javascript

1import { spawnSync } from 'node:child_process';

2import { chmodSync, existsSync, mkdirSync, readdirSync, readFileSync, rmSync, statSync, writeFileSync } from 'node:fs';

High

Child Process

Package source references child process execution.

dist/cli/publishing.jsView on unpkg · L1

3import { homedir } from 'node:os';

4import { basename, dirname, extname, join, matchesGlob, relative } from 'node:path';

5import { z } from 'zod';

6import { DASHBOARD_URL, UPLOAD, appSummary, isPrivatePath, loginPoll, loginStarted, nameProblem, publishMessage, publishSummary, setupCodeExchanged, sourcePathProblem } from "../publishWire.js";

7import { appInfo } from "../appTitle.js";

8import { SESSION_COOKIE } from "../auth/user.js";

9import { PROJECT_FILE, readProjectFile } from "../vite/projectFile.js";

10const CONFIG_DIR = join(homedir(), '.config', 'pattern');

11const CREDENTIALS_FILE = join(CONFIG_DIR, 'credentials.json');

12const PENDING_FILE = join(CONFIG_DIR, 'pending-login.json');

13const LOGIN_MINUTES = 10;

14const POLL_MS = 2000;

15const LOGIN_WAIT_MS = 100_000;

16const PUBLISH_WAIT_MS = 300_000;

17const LAUNCHER = 'app';

18const STARTER_WORKSPACE = 'pnpm-workspace.yaml';

19const STARTER_BUILD_SETTINGS = 'allowBuilds:\n esbuild: false\n workerd: false\n';

20const IGNORED_IN_EMPTY_FOLDER = new Set(['.DS_Store', '.claude']);

21const MIME_TYPES = {

presets/lintPlugin.jsView file

Lines 1-8javascript

1import { existsSync } from 'node:fs'

3const source = new URL('../src/rules/lintPlugin.ts', import.meta.url)

4const built

dist/cli/app.js#virtual:normalized:round1View file

235current directory to the nearest project launcher (an executable ./app containing the line L236: ${LAUNCHER_MARKER_LINE}) and runs it, so each project"s CLI lives in its repo and the shim\nnever needs updating. Replaces older Jig or starter-kit shims; refuses to overwrite an\n... L237: };

High

Same File Env Network Execution

A single source file combines environment access, network access, and code or shell execution; review context before blocking.

dist/cli/app.js#virtual:normalized:round1View on unpkg · L235

235Trigger-reachable command-output exfiltration chain: manifest.bin -> dist/cli/app.js L235: current directory to the nearest project launcher (an executable ./app containing the line L236: ${LAUNCHER_MARKER_LINE}) and runs it, so each project"s CLI lives in its repo and the shim\nnever needs updating. Replaces older Jig or starter-kit shims; refuses to overwrite an\n... L237: };

High

Trigger Reachable Command Output Exfiltration

A manifest entrypoint or package-local install chain reaches command-output exfiltration behavior.

dist/cli/app.js#virtual:normalized:round1View on unpkg · L235

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 3

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

dist/cli/publishing.js#virtual:normalized:round1View file

1import { spawnSync } from "node:child_process"; L2: import { chmodSync, existsSync, mkdirSync, readdirSync, readFileSync, rmSync, statSync, writeFileSync } from "node:fs"; ... L5: import { z } from "zod"; L6: import { DASHBOARD_URL, UPLOAD, appSummary, isPrivatePath, loginPoll, loginStarted, nameProblem, publishMessage, publishSummary, setupCodeExchanged, sourcePathProblem } from "../pu... L7: import { appInfo } from "../appTitle.js"; ... L9: import { PROJECT_FILE, readProjectFile } from "../vite/projectFile.js"; L10: const CONFIG_DIR = join(homedir(), ".config", "pattern"); L11: const CREDENTIALS_FILE = join(CONFIG_DIR, "credentials.json"); ... L51: function dashboard() { L52: return (process.env.PATTERN_DASHBOARD_URL ?? DASHBOARD_URL).replace(/\/$/, ""); L53: } ... L63: try {

Critical

Download Execute

Source downloads or fetches remote code and executes it.

dist/cli/publishing.js#virtual:normalized:round1View on unpkg · L1

1Trigger-reachable chain: manifest.bin -> dist/cli/app.js -> dist/cli/publishing.js L1: import { spawnSync } from "node:child_process"; L2: import { chmodSync, existsSync, mkdirSync, readdirSync, readFileSync, rmSync, statSync, writeFileSync } from "node:fs"; ... L5: import { z } from "zod"; L6: import { DASHBOARD_URL, UPLOAD, appSummary, isPrivatePath, loginPoll, loginStarted, nameProblem, publishMessage, publishSummary, setupCodeExchanged, sourcePathProblem } from "../pu... L7: import { appInfo } from "../appTitle.js"; ... L9: import { PROJECT_FILE, readProjectFile } from "../vite/projectFile.js"; L10: const CONFIG_DIR = join(homedir(), ".config", "pattern"); L11: const CREDENTIALS_FILE = join(CONFIG_DIR, "credentials.json"); ... L51: function dashboard() { L52: return (process.env.PATTER

Critical

Trigger Reachable Dangerous Capability

A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.

Source & flagged code

8 flagged · loading source

dist/cli/publishing.jsView file

1import { spawnSync } from 'node:child_process'; L2: import { chmodSync, existsSync, mkdirSync, readdirSync, readFileSync, rmSync, statSync, writeFileSync } from 'node:fs';

High

Child Process

Package source references child process execution.

dist/cli/publishing.jsView on unpkg · L1

presets/lintPlugin.jsView file

4const built = new URL('../dist/rules/lintPlugin.js', import.meta.url) L5: const plugin = await import(existsSync(source) ? source.href : built.href) L6:

Medium

Dynamic Require

Package source references dynamic require/import behavior.

presets/lintPlugin.jsView on unpkg · L4

dist/cli/app.js#virtual:normalized:round1View file

Findings

2 Critical5 High4 Medium5 Low

CriticalDownload Executedist/cli/publishing.js#virtual:normalized:round1

CriticalTrigger Reachable Dangerous Capabilitydist/cli/publishing.js#virtual:normalized:round1

HighChild Processdist/cli/publishing.js

HighSame File Env Network Executiondist/cli/app.js#virtual:normalized:round1

HighCommand Output Exfiltrationdist/cli/publishing.js#virtual:normalized:round1

HighTrigger Reachable Command Output Exfiltrationdist/cli/app.js#virtual:normalized:round1

HighSemantic Analysis Limiteddist/cli/app.js#virtual:normalized:round1

MediumDynamic Requirepresets/lintPlugin.js

MediumNetwork

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

Affected versions and remediation

This report applies to @trypattern/sdk@0.1.9.

See all versions of @trypattern/sdk for other recorded verdicts.

Review the evidence and your use of @trypattern/sdk@0.1.9 before allowing it. Restrict the permissions described in this report.
Choose an independently verified alternative or release. This report does not establish that other versions are safe.

Evidence last updated: 2026-10-18 10:50:29.083Z (UTC).

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