registry / @byteplus/ark-cli / 1.0.21

@byteplus/ark-cli@1.0.21

BytePlus Ark command-line interface

AI Security Review

scanned 13d ago · by lpm-firewall-ai

The install hook performs automatic package-owned skill setup, an unresolved lifecycle risk that warrants a warning. The binary download is HTTPS-based and hash-checked, and inspected source does not establish a malicious payload or broad agent-control mutation.

Static reason

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

Trigger

Installing the package outside CI, BUILD_NUMBER, or RUN_ID environments.

Impact

The binary may synchronize package-provided skills during installation; inspected JavaScript does not establish what files that command changes.

Mechanism

The hook downloads and verifies a platform binary, then invokes it with +connect --refresh; the manifest specifies a skills archive.

AI rationale

Evidence

package.jsonscripts/postinstall.jsmanifest.json

Network endpoints1

sf16-sg.tiktokcdn.com/obj/eden-sg/psjryh/ljhwZthlaukjlkulzlp/prod/1.0.21/skills.tar.gz

Decision evidence

public snapshot

AI called this Suspicious at 83.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

package.json runs scripts/postinstall.js automatically during installation.
The hook downloads a platform binary and rejects it if its SHA-256 differs from the manifest.
The install hook automatically runs the binary's +connect --refresh command, described in the source as skill sync.
manifest.json defines a package-owned skills archive download.

Evidence against

The downloader requires HTTPS except for a test-only loopback case.
The installed binary is checked against a manifest SHA-256 before installation.

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystemNetwork

Supply chainNo supply-chain packaging signals triggered.

ManifestNo manifest risk signals triggered.

scanned 2 file(s), 18.9 KB of source

Source & flagged code

8 flagged

package.jsonView file

Lines 1-36json

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

3 "version": "1.0.21",

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": {

Medium

Suspicious Lifecycle Evidence

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

package.jsonView on unpkg · L16

19 "product": "arkcli-bp",

20 "teaAppId": 1044680,

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.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

308if (actual !== expectedSHA.toLowerCase()) { throw new Error(`sha256 mismatch (expected ${expectedSHA}, actual ${actual})`); } return source; } catch (err) { fs.rmSync(destination, { force: t

Medium

Ai Review Evidence

The hook downloads a platform binary and rejects it if its SHA-256 differs from the manifest.

scripts/postinstall.jsView on unpkg · L308

497execFileSync(binPath, ["+connect", "--refresh"], { stdio }); } catch (err) { const message = `${PACKAGE_NAME}: Skill sync skipped (${err.message || err}). ` + "Run `arkcli +connect -

Medium

Suspicious Lifecycle Evidence

The install hook automatically runs the binary's +connect --refresh command, described in the source as skill sync.

scripts/postinstall.jsView on unpkg · L497

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/1.0.21/arkcli-1.0.21-windows-amd64.exe",

44 "sha256": "627e19fefa981eacf2889eddb5793eb2fbc3d036366669f3d0693b26b9f50b72",

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

16"postinstall": "node scripts/postinstall.js" }, "arkcli"

Medium

Suspicious Lifecycle Evidence

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

package.jsonView on unpkg · L16

scripts/postinstall.jsView file

Findings

2 High8 Medium2 Low

HighInstall Time Lifecycle Scriptspackage.json

HighPrevious Version Dangerous Deltascripts/postinstall.js

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumNetwork

MediumEnvironment Vars

MediumSuspicious Lifecycle Evidencepackage.json

MediumAi Review Evidencescripts/postinstall.js

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@1.0.21.

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

Review the evidence and your use of @byteplus/ark-cli@1.0.21 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 20:53:05.266Z (UTC).

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