registry / Credential exfiltration / hostinger-api-mcp / 2.9.1

hostinger-api-mcp@2.9.1

MCP server for Hostinger API

AI Security Review

scanned 6d ago · by lpm-firewall-ai

The package’s default endpoints are Hostinger services, but environment-configurable destinations can receive existing bearer or refresh credentials without a source-level destination restriction. This supports a warning for conditional credential exposure, not a finding of malicious behavior.

Static reason

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

Trigger

A runtime API request or OAuth refresh while API_BASE_URL or OAUTH_ISSUER is set to another host.

Impact

Credentials could be exposed to the configured endpoint if it is not trusted.

Mechanism

The runtime attaches its bearer token to requests built from API_BASE_URL; OAuth sends a saved refresh token to the issuer selected by OAUTH_ISSUER.

AI rationale

Evidence

src/core/runtime.jssrc/core/oauth.js

Network endpoints2

developers.hostinger.comauth.hostinger.com

Decision evidence

public snapshot

AI called this Suspicious at 87.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

The runtime accepts an environment-configured API base URL, defaulting to Hostinger’s API.
Runtime API requests build URLs from that base and attach the bearer token before sending the request.
Bearer credentials can come from Hostinger token environment variables or OAuth; saved OAuth credentials are read from the user’s configuration directory.
The OAuth issuer is environment-configurable, and refresh requests send the saved refresh token to its token endpoint.
The package’s build script is explicit and runs the TypeScript compiler; it is not an install lifecycle hook.

Evidence against

The configured Hostinger endpoints are the defaults, and the source shows no package-selected unrelated recipient or automatic credential transfer to a fixed third party.
The flagged build command compiles TypeScript; package.json has no preinstall, install, or postinstall hook.

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystemNetwork

Source & flagged code

4 flagged

build.jsView file

Lines 1-38javascript

1#!/usr/bin/env node

3import { exec } from 'child_process';

4import fs from 'fs';

High

Child Process

Package source references child process execution.

build.jsView on unpkg · L2

5import path from 'path';

6import { fileURLToPath } from 'url';

8// Get proper paths for ES modules

9const __filename = fileURLToPath(import.meta.url);

10const __dirname = path.dirname(__filename);

12// Ensure dist directory exists

13if (!fs.existsSync('./dist')) {

14 fs.mkdirSync('./dist');

15}

17// Run TypeScript compiler

18console.log('Compiling TypeScript...');

19exec('npx tsc', (error, stdout, stderr) => {

20 if (error) {

High

Runtime Package Install

Package source invokes a package manager install command at runtime.

build.jsView on unpkg · L18

21 console.error('Error compiling TypeScript:', error);

22 console.error(stderr);

23 process.exit(1);

24 }

26 if (stdout) {

27 console.log(stdout);

28 }

30 console.log('TypeScript compilation successful');

32 // Copy .env.example to dist

33 try {

34 if (fs.existsSync('./.env.example')) {

35 fs.copyFileSync('./.env.example', './dist/.env.example');

36 console.log('Copied .env.example to dist directory');

37 }

src/core/oauth.jsView file

•matchType = previous_version_dangerous_delta matchedPackage = hostinger-api-mcp@1.57.0 matchedIdentity = npm:aG9zdGluZ2VyLWFwaS1tY3A:1.57.0 similarity = 0.554 summary = stored previous version shares package body but lacks this dangerous source file

Critical

Previous Version Dangerous Delta

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

src/core/oauth.jsView on unpkg

src/core/runtime.jsView file

Lines 60-100javascript

60 // Lenient on purpose: a missing or non-string uri must surface as InvalidParams

61 // from the handler, not as a zod parse failure (InternalError).

62 params: z.object({ uri: z.unknown().optional() }).passthrough().optional(),

63});

65/**

Source & flagged code

4 flagged · loading source

build.jsView file

2L3: import { exec } from 'child_process'; L4: import fs from 'fs';

High

Child Process

Package source references child process execution.

build.jsView on unpkg · L2

18console.log('Compiling TypeScript...'); L19: exec('npx tsc', (error, stdout, stderr) => { L20: if (error) {

High

Runtime Package Install

Package source invokes a package manager install command at runtime.

build.jsView on unpkg · L18

src/core/oauth.jsView file

Critical

Previous Version Dangerous Delta

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

src/core/oauth.js

Findings

1 Critical3 High4 Medium4 Low

CriticalPrevious Version Dangerous Deltasrc/core/oauth.js

HighChild Processbuild.js

HighShell

HighRuntime Package Installbuild.js

MediumNetwork

MediumEnvironment Vars

MediumStructural Risk Force Deep Review

MediumAi Review Evidencesrc/core/runtime.js

LowScripts Present

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings

Affected versions and remediation

This report applies to hostinger-api-mcp@2.9.1.

See all versions of hostinger-api-mcp for other recorded verdicts.

Review the evidence and your use of hostinger-api-mcp@2.9.1 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: 2026-10-17 08:08:17.340Z (UTC).

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