registry / Credential exfiltration / hostinger-api-mcp / 1.49.0

hostinger-api-mcp@1.49.0

MCP server for Hostinger API

AI Security Review

scanned 6d ago · by lpm-firewall-ai

The source establishes conditional credential exposure through an unrestricted operator-configured OAuth issuer, which warrants a warning but does not show a package-selected recipient or covert transfer. The default issuer is Hostinger and the manifest has no install lifecycle hook.

Static reason

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

Trigger

An API request needs OAuth authentication and the saved access token is expired or rejected, causing a refresh attempt.

Impact

If the issuer is changed to an unrelated recipient, that recipient receives the saved refresh token; no such transfer occurs with the Hostinger default.

Mechanism

The provider places the saved refresh token in a form request body and posts it to the configured issuer's token endpoint without checking that the issuer matches the one associated with the saved credentials.

AI rationale

Evidence

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

Network endpoints1

auth.hostinger.com

Decision evidence

public snapshot

AI called this Suspicious at 79.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

The default OAuth issuer is Hostinger, but the OAUTH_ISSUER environment variable can replace it without a destination restriction.
When a saved access token is expired, the provider loads saved credentials and attempts a refresh using the stored refresh token.
The refresh request sends that token in a form body to the configured issuer's token endpoint.
Runtime API requests obtain a bearer token through the OAuth provider and attach it to the request.
The manifest declares server entrypoints and start/build scripts, with no install lifecycle hook.

Evidence against

The default issuer is https://auth.hostinger.com; exposure to another recipient requires an operator-configured issuer override.

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystemNetworkShell

Supply chain

HighEntropyStringsUrlStrings

Manifest

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

Lines 5-45javascript

5import { exec } from "child_process";

6import { fileURLToPath } from "url";

7import path from "path";

8import os from "os";

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

•matchType = previous_version_dangerous_delta matchedPackage = hostinger-api-mcp@1.57.0 matchedIdentity = npm:aG9zdGluZ2VyLWFwaS1tY3A:1.57.0 similarity = 0.482 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.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/oauth.js

LowScripts Present

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings

Affected versions and remediation

This report applies to hostinger-api-mcp@1.49.0.

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

Review the evidence and your use of hostinger-api-mcp@1.49.0 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 08:03:33.365Z (UTC).

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