registry / @byteplus/ark-cli / 1.0.36

@byteplus/ark-cli@1.0.36

BytePlus Ark command-line interface

AI Security Review

scanned 13d ago · by lpm-firewall-ai

The automatic postinstall skill refresh creates an agent-extension lifecycle risk, while the available source ties it to this CLI’s own product setup. The inspected source does not establish unconsented broad agent-control changes or another concrete attack.

Static reason

One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source

Trigger

npm postinstall, except when the hook exits early for CI, BUILD_NUMBER, or RUN_ID.

Impact

The command may install or refresh skills for supported local agents; the exact files and changes are not established by the inspected source.

Mechanism

The hook downloads a platform binary, verifies its checksum, then invokes it with +connect --refresh.

AI rationale

Evidence

package.jsonscripts/postinstall.jsmanifest.json

Network endpoints1

sf16-sg.tiktokcdn.com/obj/eden-sg/psjryh/ljhwZthlaukjlkulzlp/prod/1.0.36/skills.tar.gz

Decision evidence

public snapshot

AI called this Suspicious at 84.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

package.json runs scripts/postinstall.js automatically after installation.
The postinstall hook invokes the downloaded CLI with +connect --refresh, including when no controlling terminal is available.
The package manifest identifies a versioned skills archive and its checksum; the invoked CLI’s skill-sync behavior is not present in the inspected JavaScript source.

Evidence against

The hook checks the downloaded binary against a SHA-256 value from the package manifest before installing it.
The package describes itself as a BytePlus Ark CLI and documents installing its Skills after CLI installation.

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystemNetwork

Supply chainNo supply-chain packaging signals triggered.

ManifestNo manifest risk signals triggered.

scanned 2 file(s), 20.8 KB of source

Source & flagged code

8 flagged

package.jsonView file

Lines 1-36json

2 "name": "@byteplus/ark-cli",

3 "version": "1.0.36",

4 "description": "BytePlus Ark command-line interface",

5 "bin": {

6 "arkcli": "scripts/run.js"

7 },

8 "files": [

9 "scripts/run.js",

10 "scripts/postinstall.js",

11 "manifest.json",

12 "README.md",

13 "LICENSE"

14 ],

15 "scripts": {

16 "postinstall": "node scripts/postinstall.js"

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L16

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg · L16

17 },

18 "arkcli": {

19 "product": "arkcli-bp",

20 "teaAppId": 1044680,

Medium

Suspicious Lifecycle Evidence

package.json runs scripts/postinstall.js automatically after installation.

package.jsonView on unpkg · L15

21 "teaUrl": "https://sgali-mcs.byteoversea.com/list"

22 },

23 "publishConfig": {

24 "access": "public",

25 "registry": "https://registry.npmjs.org/"

26 },

27 "engines": {

28 "node": ">=16"

29 },

30 "os": [

31 "darwin",

32 "linux",

33 "win32"

34 ],

35 "cpu": [

36 "x64",

scripts/postinstall.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 1

High

Semantic Analysis Limited

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

scripts/postinstall.js#virtual:normalized:round1View on unpkg

scripts/postinstall.jsView file

•matchType = previous_version_dangerous_delta matchedPackage = @byteplus/ark-cli@1.0.27 matchedIdentity = npm:QGJ5dGVwbHVzL2Fyay1jbGk:1.0.27 similarity = 0.500 summary = stored previous version shares package body but lacks this dangerous source file

High

Previous Version Dangerous Delta

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

scripts/postinstall.jsView on unpkg

529let tty = null; try { tty = fs.openSync("/dev/tty", "r+"); } catch (_) { // A controlling terminal is optional; +connect is still non-interactive. } const stdio = tty === null ? "inherit" : ["ignore", tty, tty]; try { execFileSync(binPath, ["+connect", "--refresh"],

Medium

Suspicious Lifecycle Evidence

The postinstall hook invokes the downloaded CLI with +connect --refresh, including when no controlling terminal is available.

scripts/postinstall.jsView on unpkg · L529

320async function downloadVerifiedBinary(sources, destination, expectedSHA) { const errors = []; for (const source of sources) { fs.rmSync(destination, { force: true }); try { console.log(`${PACKAGE_NAME}: downloading ${key} binary from ${source.kind}...`); await download(source.url, destination, source.kind);

Medium

Suspicious Lifecycle Evidence

package.json runs scripts/postinstall.js automatically after installation.

scripts/postinstall.jsView on unpkg · L320

manifest.jsonView file

Lines 40-73json

40 },

41 "windows-amd64": {

42 "kind": "cdn",

43 "url": "https://sf16-sg.tiktokcdn.com/obj/eden-sg/psjryh/ljhwZthlaukjlkulzlp/prod/1.0.36/arkcli-1.0.36-windows-amd64.exe",

44 "sha256": "a391a5d3d5d37dcf0c267ee1b2e57024fa18658f3ec5f5dc1beb58b0d027a9be",

Source & flagged code

8 flagged · loading source

package.jsonView file

•scripts.postinstall = node scripts/postinstall.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.js

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

15"scripts": { "postinstall": "node scripts/postinstall.js" }, "arkcli": { "product": "arkcli-bp",

Medium

Suspicious Lifecycle Evidence

package.json runs scripts/postinstall.js automatically after installation.

package.jsonView on unpkg · L15

scripts/postinstall.js#virtual:normalized:round1View file

Findings

3 High7 Medium2 Low

HighInstall Time Lifecycle Scriptspackage.json

HighSemantic Analysis Limitedscripts/postinstall.js#virtual:normalized:round1

HighPrevious Version Dangerous Deltascripts/postinstall.js

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumNetwork

MediumEnvironment Vars

MediumSuspicious Lifecycle Evidencepackage.json

MediumSuspicious Lifecycle Evidencescripts/postinstall.js

MediumAi Review Evidencemanifest.json

MediumSuspicious Lifecycle Evidencescripts/postinstall.js

LowScripts Present

LowFilesystem

Affected versions and remediation

This report applies to @byteplus/ark-cli@1.0.36.

See all versions of @byteplus/ark-cli for other recorded verdicts.

Review the evidence and your use of @byteplus/ark-cli@1.0.36 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: 2026-10-09 20:53:45.518Z (UTC).

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