registry / AI-agent capability abuse / @trypattern/sdk / 0.1.33

@trypattern/sdk@0.1.33

AI Security Review

scanned 4d ago · by lpm-firewall-ai

The package has no install lifecycle hook, and the flagged download and setup behavior is behind an explicit CLI command. The agent-directed instruction to publish without user confirmation leaves a concrete, limited capability risk, so warn rather than block.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review

Trigger

A user runs app pull and an AI agent acts on the returned onboarding text.

Impact

If followed, the agent could publish a project change to its live site without the user approving that publication.

Mechanism

The CLI presents agent-directed instructions that remove a confirmation step before publishing.

AI rationale

Evidence

dist/cli/app.jsdist/cli/publishing.js

Decision evidence

public snapshot

AI called this Suspicious at 87.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

package.json exposes an app CLI and lists no install lifecycle hook.
The AI-facing onboarding runs only after the explicit app pull command, which is documented to download a site, install it, and run setup.
The pull path writes returned source files into the target project, then installs its dependencies.
The onboarding tells an agent to treat AGENTS.md rules as applicable and to publish the first change without asking.
The .claude references are limited to formatting and empty-folder handling; the inspected code does not mutate global agent configuration.
Saved cookies are sent to the dashboard host; the package default is onpattern.app.

Evidence against

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetwork

Supply chain

HighEntropyStringsUrlStrings

Manifest

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 = normalized_sha256 matchedPackage = @trypattern/sdk@0.1.31 matchedPath = dist/cli/app.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/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

2 Critical6 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

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/app.js

HighKnown Malware Source Similaritydist/cli/publishing.js

MediumDynamic Requiredist/cli/starter.js

MediumNetwork

Medium

Affected versions and remediation

This report applies to @trypattern/sdk@0.1.33.

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

Review the evidence and your use of @trypattern/sdk@0.1.33 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 17:48:27.457Z (UTC).

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