registry / @yeaft/webchat-agent / 1.0.499

@yeaft/webchat-agent@1.0.499

Remote worker agent for Yeaft Web Code Agent — connects the native Yeaft engine, CLI providers, and workbench tools

Static Scan Results

scanned 2mo ago · by rust-scanner

Static analysis completed at 97.0% confidence. No malicious behavior was detected; 22 low-signal pattern(s) were surfaced and cleared.

Static reason

No blocking static signals were detected.; source matched previously finalized malicious package; routed for review

Decision evidence

public snapshot

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNetworkShellWebSocket

Supply chain

HighEntropyStringsMinifiedPossibleObfuscationProtestwareUrlStrings

ManifestNo manifest risk signals triggered.

scanned 392 file(s), 9.06 MB of source, external domains: 127.0.0.1, 169.254.169.254, accounts.google.com, aka.ms, api.anthropic.com, api.deepseek.com, api.github.com, api.githubcopilot.com, api.openai.com, api.tavily.com, api.weixin.qq.com, azuread.github.io, docs.microsoft.com, docs.oasis-open.org, duckduckgo.com, en.wikipedia.org, engelschall.com, generativelanguage.googleapis.com, github.com, html.duckduckgo.com, jquery.org, lodash.com, login.chinacloudapi.cn, login.microsoftonline.com, login.microsoftonline.de, login.microsoftonline.us, login.partner.microsoftonline.cn, login.windows-ppe.net, models.dev, nodejs.org, oauth2.googleapis.com, open.weixin.qq.com, openapi.alipay.com, openauth.alipay.com, openjsf.org, openoffice.org, opensource.org, pkg.yeaft.com, purl.oclc.org, purl.org, schemas.microsoft.com, schemas.openxmlformats.org, sheetjs.com, storage.googleapis.com, stuk.github.io, tavily.com, tldrlegal.com, tools.ietf.org, underscorejs.org, view.officeapps.live.com

Oversized source lightweight scan

local-runtime/web/mermaid.min.js2.75 MB file, sampled 256 KB

Source & flagged code

14 flagged

windows-upgrade-runner.jsView file

Lines 1-21javascript

1import { appendFileSync, mkdirSync, readFileSync, rmSync, writeFileSync } from 'node:fs';

2import { spawn } from 'node:child_process';

3import { dirname } from 'node:path';

High

Child Process

Package source references child process execution.

windows-upgrade-runner.jsView on unpkg · L1

4import { pathToFileURL } from 'node:url';

5import { setTimeout as delay } from 'node:timers/promises';

6import {

7 buildUpgradeInstallArgs,

8 releaseWindowsUpgradeLock,

9 resolveWindowsNpmCliPath,

10} from './upgrade-command.js';

12const PID_POLL_INTERVAL_MS = 100;

13const PID_WAIT_TIMEOUT_MS = 30_000;

14const HANDOFF_AUTH_TIMEOUT_MS = 15_000;

15const FILE_LOCK_RETRY_MS = [0, 250, 750, 1_500];

16const PM2_RETRY_MS = [0, 250, 750];

18function appendLog(logPath, message) {

19 try {

20 appendFileSync(logPath, `[Upgrade] ${message}\n`);

21 } catch {}

connection/upgrade.jsView file

Lines 1-62javascript

1import { execFile, execFileSync, spawn } from 'child_process';

2import { writeFileSync, mkdirSync, existsSync } from 'fs';

3import { fileURLToPath } from 'url';

4import { join, dirname } from 'path';

local-runtime/web/jszip.min.jsView file

Lines 1-13javascript

1/*!

3JSZip v3.10.1 - A JavaScript class for generating and reading zip files

4<http://stuartk.com/jszip>

7Dual licenced under the MIT license or GPLv3. See https://raw.github.com/Stuk/jszip/main/LICENSE.markdown.

9JSZip uses the library pako released under the MIT license :

10https://github.com/nodeca/pako/blob/main/LICENSE

11*/

local-runtime/web/docx-preview.min.jsView file

Lines 1-3javascript

1!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports,require("jszip")):"function"==typeof define

yeaft/tools/js-repl.jsView file

Lines 1-21javascript

1/**

2 * js-repl.js — JavaScript REPL for evaluating expressions.

Medium

Unsafe Vm Context

Package source executes code through a VM context API.

yeaft/tools/js-repl.jsView on unpkg · L1

3 *

4 * Runs JavaScript code in a persistent VM context, allowing

5 * state to be maintained across calls.

6 *

7 * task-333b: merged the former `JsReplReset` tool into this one as a

8 * `reset: true` parameter. A single tool with a reset flag eliminates a

local-runtime/server/browser-runtime-routes.jsView file

Lines 3-43javascript

3import { agents, webClients } from './context.js';

5const MAX_ROUTES = 2048;

6const MAX_PEERS = 4096;

local-run.jsView file

Lines 1-21javascript

1import { spawn } from 'child_process';

2import { existsSync } from 'fs';

3import { homedir } from 'os';

4import { createServer } from 'net';

browser-runtime/windows-version-job.ps1View file

•path = browser-runtime/windows-version-job.ps1 kind = build_helper sizeBytes = 8589 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

browser-runtime/windows-version-job.ps1View on unpkg

local-runtime/web/xlsx.min.js.gzView file

•path = local-runtime/web/xlsx.min.js.gz kind = high_entropy_blob sizeBytes = 335014 magicHex = [redacted]

High

Ships High Entropy Blob

Package ships high-entropy non-source blobs.

local-runtime/web/xlsx.min.js.gzView on unpkg

•path = local-runtime/web/xlsx.min.js.gz kind = compressed_blob sizeBytes = 335014 magicHex = [redacted]

Medium

Ships Compressed Blob

Package ships compressed or archive-like blobs.

local-runtime/web/xlsx.min.js.gzView on unpkg

container-cli.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 9

High

Semantic Analysis Limited

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

container-cli.js#virtual:normalized:round1View on unpkg

local-runtime/web/mermaid.min.jsView file

•matchType = normalized_sha256 matchedPackage = bmad-speckit-sdd-flow@2.1.12 matchedPath = _bmad/skills/requirements-contract-[redacted].min.js matchedIdentity = npm:Ym1hZC1zcGVja2l0LXNkZC1mbG93:2.1.12 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.

local-runtime/web/mermaid.min.jsView on unpkg

Source & flagged code

14 flagged · loading source

windows-upgrade-runner.jsView file

1import { appendFileSync, mkdirSync, readFileSync, rmSync, writeFileSync } from 'node:fs'; L2: import { spawn } from 'node:child_process'; L3: import { dirname } from 'node:path';

High

Child Process

Package source references child process execution.

windows-upgrade-runner.jsView on unpkg · L1

connection/upgrade.jsView file

42const isWin = platform() === 'win32'; L43: // Windows: use bare 'npm'/'pm2' + shell:true — cmd.exe finds them via PATH. L44: // This was the working pattern before ce58bbc. Absolute paths break when

High

Shell

Package source references shell execution.

connection/upgrade.jsView on unpkg · L42

1Trigger-reachable persistence chain: scripts.start -> index.js -> connection.js -> connection/index.js -> connection/upgrade.js L1: import { execFile, execFileSync, spawn } from 'child_process'; L2: import { writeFileSync, mkdirSync, existsSync } from 'fs'; ... L34: export function resolveInstanceId() { L35: return ctx.CONFIG?.instanceId || process.env.YEAFT_AGENT_INSTANCE || DEFAULT_INSTANCE_ID; L36: } ... L42: const isWin = platform() === 'win32'; L43: // Windows: use bare 'npm'/'pm2' + shell:true — cmd.exe finds them via PATH. L44: // This was the working pattern before ce58bbc. Absolute paths break when ... L65: // Shared cleanup logic for restart/upgrade L66: function cleanupAndExit(exitCode) { L67: setTimeout(async () => { ... L421: const serviceName = getServiceName(instanceId);

Findings

7 High9 Medium6 Low

HighChild Processwindows-upgrade-runner.js

HighShellconnection/upgrade.js

HighSame File Env Network Executionlocal-run.js

HighTrigger Reachable Persistenceconnection/upgrade.js

HighShips High Entropy Bloblocal-runtime/web/xlsx.min.js.gz

HighSemantic Analysis Limitedcontainer-cli.js#virtual:normalized:round1

HighKnown Malware Source Similaritylocal-runtime/web/mermaid.min.js

MediumDynamic Requirelocal-runtime/web/docx-preview.min.js

MediumUnsafe Vm Contextyeaft/tools/js-repl.js

MediumNetwork

MediumEnvironment Vars

MediumInstall Persistenceconnection/upgrade.js

Affected versions and remediation

This report applies to @yeaft/webchat-agent@1.0.499.

See all versions of @yeaft/webchat-agent for other recorded verdicts.

Review the evidence and your use of @yeaft/webchat-agent@1.0.499 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: 2026-09-07 14:44:24.248Z (UTC).

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