registry / @byteplus/ark-cli / 1.0.39

@byteplus/ark-cli@1.0.39

BytePlus Ark command-line interface

AI Security Review

scanned 7d ago · by lpm-firewall-ai

The flagged lifecycle behavior is a first-party package skill setup path, but its effects are not visible in the inspected source. The digest check and CI guard reduce concern but do not resolve the non-CI install-time behavior, so a warning is appropriate.

Static reason

One or more suspicious static signals were detected.

Trigger

Installing the package outside CI.

Impact

The command may perform package-owned skill setup during installation; the changed locations and full effects cannot be confirmed from the available source.

Mechanism

The hook installs a digest-checked binary and invokes its +connect --refresh command during postinstall.

AI rationale

Evidence

package.jsonscripts/postinstall.jsmanifest.jsonbin/

Network endpoints1

sf16-sg.tiktokcdn.com/obj/eden-sg/psjryh/ljhwZthlaukjlkulzlp/prod/1.0.39/skills.tar.gz

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 registers scripts/postinstall.js as an automatic postinstall hook.
The hook downloads a manifest-selected binary and rejects it if its SHA-256 differs from the manifest digest.
Outside CI, the hook invokes the downloaded binary with +connect --refresh, which the source describes as skill sync.
manifest.json advertises a CDN-hosted primary skills archive with a SHA-256 digest.

Evidence against

The binary download is digest-checked, and stable releases have a GitHub release fallback.
The skill sync invocation is skipped when CI, BUILD_NUMBER, or RUN_ID is set.

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": "1.0.39",

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",

Medium

Suspicious Lifecycle Evidence

package.json registers scripts/postinstall.js as an automatic postinstall hook.

package.jsonView on unpkg · L16

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.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

372const sources = [{ kind: "cdn", url: entry.url }]; if (!isNonStable) { sources.push({ kind: "github-release", url: entry.fallback.url }); } installedFrom = awa

Medium

Ai Review Evidence

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

scripts/postinstall.jsView on unpkg · L372

328if (actual !== expectedSHA.toLowerCase()) { throw new Error(`sha256 mismatch (expected ${expectedSHA}, actual ${actual})`); } return source; } catch (err) { fs.rmSync(des

Medium

Ai Review Evidence

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

scripts/postinstall.jsView on unpkg · L328

537execFileSync(binPath, ["+connect", "--refresh"], { stdio }); } catch (err) { const message = `${PACKAGE_NAME}: Skill sync skipped (${err.message || err}). ` + "Run `arkcli +connect --refresh` to retry."; if (tty === null) { console.warn(message); } else { try { fs.writeSync(tty, `${message}\n

Medium

Ai Review Evidence

Outside CI, the hook invokes the downloaded binary with +connect --refresh, which the source describes as skill sync.

scripts/postinstall.jsView on unpkg · L537

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": { "p

Medium

Suspicious Lifecycle Evidence

package.json registers scripts/postinstall.js as an automatic postinstall hook.

package.jsonView on unpkg · L16

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

Findings

2 High8 Medium2 Low

HighInstall Time Lifecycle Scriptspackage.json

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

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumNetwork

MediumEnvironment Vars

MediumSuspicious Lifecycle Evidencepackage.json

MediumAi Review Evidencescripts/postinstall.js

LowScripts Present

LowFilesystem

Affected versions and remediation

This report applies to @byteplus/ark-cli@1.0.39.

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

Review the evidence and your use of @byteplus/ark-cli@1.0.39 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: 2026-10-15 18:18:19.137Z (UTC).

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