registry / Credential exfiltration / @trypattern/sdk / 0.1.22

@trypattern/sdk@0.1.22

AI Security Review

scanned 5d ago · by lpm-firewall-ai

The source establishes a configurable credential destination and an actual cookie send, so a warning is appropriate. The default dashboard and explicit browser approval weigh against treating this as a covert attack.

Static reason

High-risk behavior combination matched malicious policy.; previous stored version diff introduced dangerous source

Trigger

A user runs login or another authenticated CLI command while PATTERN_DASHBOARD_URL points to a chosen dashboard.

Impact

The configured recipient can receive and use the session associated with that dashboard.

Mechanism

The CLI selects a saved cookie for the configured dashboard and attaches it to requests sent to that dashboard.

AI rationale

Evidence

dist/cli/publishing.js~/.config/pattern/credentials.json

Network endpoints1

onpattern.app

Decision evidence

public snapshot

AI called this Suspicious at 78.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

package.json exposes a CLI entry point and contains no install lifecycle hook.
The CLI login command is explicitly invoked by the user and starts browser approval.
The dashboard can be overridden with PATTERN_DASHBOARD_URL, and the CLI sends its saved session cookie to that dashboard.
The `.claude` references are formatting and empty-folder path constants; they do not establish agent configuration writes.

Evidence against

The package-selected dashboard defaults to onpattern.app, and login describes checking a matching code and clicking Allow in the browser.
Saved credentials are indexed by the selected dashboard URL, limiting this behavior to a session associated with that configured destination.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetwork

Supply chain

HighEntropyStringsUrlStrings

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 = {

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/app.js#virtual:normalized:round1View file

281current directory to the nearest project launcher (an executable ./app containing the line L282: ${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... L283: };

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 · L281

281Trigger-reachable command-output exfiltration chain: manifest.bin -> dist/cli/app.js L281: current directory to the nearest project launcher (an executable ./app containing the line L282: ${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... L283: };

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 · L281

•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, 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@0.1.21 matchedIdentity = npm:QHRyeXBhdHRlcm4vc2Rr:0.1.21 similarity = 0.942 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

dist/cli/starter.jsView file

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

Medium

Dynamic Require

Package source references dynamic require/import behavior.

dist/cli/starter.jsView on unpkg · L79

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

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

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 Requiredist/cli/starter.js

MediumNetwork

Affected versions and remediation

This report applies to @trypattern/sdk@0.1.22.

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

Review the evidence and your use of @trypattern/sdk@0.1.22 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 15:08:02.143Z (UTC).

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