@trypattern/sdk@0.1.34

AI Security Review

scanned 4d ago · by lpm-firewall-ai

Source inspection found no lifecycle hook or concrete malicious behavior. The scanner’s download and execution indicators are consistent with the CLI’s user-invoked project pull and setup features, and its agent-related hints resolve to formatting and ignored-folder references.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review; previous stored version diff introduced dangerous source

Trigger

A user runs the package CLI, such as its pull or setup command.

Impact

No package-triggered credential theft, agent control change, persistence, destructive action, or remote payload execution was established.

Mechanism

The pull workflow saves files for the requested site into a project and installs that project’s dependencies; the `.claude` references concern formatting and ignored-folder handling.

AI rationale

Decision evidence

public snapshot

AI called this Clean at 84.0% confidence as Benign with low false-positive risk.

Evidence for AI clean decision

package.json identifies the package entrypoints and contains build and development scripts; no install lifecycle hook is present.
The `.claude` references in the CLI are part of formatting and ignored-folder lists.
The pull workflow downloads files for the requested site into a project directory and installs that project’s dependencies; this is a CLI feature, not an install-time action.
The reviewed SDK modules cover application state, UI components, service access, and server functionality; no concrete attack behavior was established.

Evidence against

Scanner labels suggested remote code execution and output exfiltration, but inspected source showed project pull and dependency setup rather than a package-triggered payload execution or exfiltration chain.
The `.claude` references do not show mutation of agent configuration or plugin installation.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetwork

Source & flagged code

9 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, mediaRow, nameProblem, publishMessage, publishSummary, setupCodeExchanged, sourcePathProblem } from "../publishWire.js";

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

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

9import { PROJECT_FILE, blueprintOf, readProjectFile, rememberVersion } 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 = {

•matchType = normalized_sha256 matchedPackage = @trypattern/sdk@0.1.31 matchedPath = dist/cli/publishing.js matchedIdentity = npm:QHRyeXBhdHRlcm4vc2Rr:0.1.31 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/cli/publishing.jsView on unpkg

dist/cli/starter.jsView file

Lines 59-99javascript

59 const parsed = table.fields.safeParse(fields);

60 if (!parsed.success) {

61 const issue = parsed.error.issues[0];

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, mediaRow, nameProblem, publishMessage, publishSummary, setupCodeExchanged, sourcePathProblem } f... L7: import { appInfo } from "../appTitle.js"; ... L9: import { PROJECT_FILE, blueprintOf, readProjectFile, rememberVersion } from "../vite/projectFile.js"; L10: const CONFIG_DIR = join(homedir(), ".config", "pattern"); L11: const CREDENTIALS_FILE = join(CONFIG_DIR, "credentials.json"); ... L51: export function dashboard() { L52: return (process.env.PATTERN_DASHBOARD_URL ?? DASHBOARD_URL).replace(/\/$

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, mediaRow, nameProblem, publishMessage, publishSummary, setupCodeExchanged, sourcePathProblem } f... L7: import { appInfo } from "../appTitle.js"; ... L9: import { PROJECT_FILE, blueprintOf, readProjectFile, rememberVersion } from "../vite/projectFile.js"; L10: const CONFIG_DIR = join(homedir(), ".config", "pattern"); L11: const CREDENTIALS_FILE = join(CONFIG_DIR, "credentials.json"); ... L51: export function dashboar

Critical

Trigger Reachable Dangerous Capability

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

dist/cli/app.jsView file

•matchType = previous_version_dangerous_delta matchedPackage = @trypattern/sdk@0.1.33 matchedIdentity = npm:QHRyeXBhdHRlcm4vc2Rr:0.1.33 similarity = 0.875 summary = stored previous version shares package body but lacks this dangerous source file

Critical

Previous Version Dangerous Delta

This package version adds a dangerous source file absent from the previous stored version; route for source-aware review.

dist/cli/app.jsView on unpkg

Source & flagged code

9 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

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/cli/publishing.jsView on unpkg

dist/cli/starter.jsView file

79return undefined; L80: const module = await import(__rewriteRelativeImportExtension(pathToFileURL(file).href)); L81: const starter = record(module)['starter'];

Findings

3 Critical5 High4 Medium5 Low

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

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

CriticalPrevious Version Dangerous Deltadist/cli/app.js

HighChild Processdist/cli/publishing.js

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

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

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

HighKnown Malware Source Similaritydist/cli/publishing.js

MediumDynamic Requiredist/cli/starter.js

MediumNetwork

Medium

Affected versions and remediation

This report applies to @trypattern/sdk@0.1.34.

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

Review the evidence and your use of @trypattern/sdk@0.1.34 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 18:05:31.294Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.