registry / @kryptosai/mcp-observatory / 1.44.2

@kryptosai/mcp-observatory@1.44.2

MCP security scanner and CI gate. Test, secure, and monitor MCP servers with attack simulation, schema drift detection, health scoring, and SARIF before agents depend on them.

AI Security Review

scanned 2mo ago · by lpm-firewall-ai

The lifecycle hook creates a persistent CI workflow in the consuming project, which is a meaningful agent-extension lifecycle risk. Its explicit opt-in gate and absence of exfiltration, self-dependency, or opaque execution make a warning more appropriate than a publish block.

Static reason

One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; previous stored version diff introduced dangerous source

Trigger

Installing the package in an MCP project with mcpObservatory.autoSetupCi set to true, or MCP_OBSERVATORY_AUTO_SETUP_CI=1.

Impact

The consumer repository gains a workflow that runs the vendor action on pull requests, pushes, and a schedule.

Mechanism

Postinstall-generated GitHub Actions workflow.

AI rationale

Evidence

package.jsonscripts/postinstall.mjs.github/workflows/mcp-observatory.yml

Decision evidence

public snapshot

AI called this Suspicious at 91.0% confidence as Dangerous Capability with low false-positive risk.

Evidence for warning

The package runs a postinstall script automatically during npm installation.
When opted in through project configuration or an environment variable, that install hook creates a GitHub Actions workflow in the consumer project.
The generated workflow runs on pull requests, pushes, and a weekly schedule using the vendor's action.

Evidence against

The workflow write requires an explicit auto-setup setting or environment variable; otherwise the hook only prints instructions.
The hook exits for CI, self-installs, non-MCP projects, and explicit disable settings.
No self-dependency, secret collection, exfiltration, remote payload execution, or obfuscation was found in the inspected paths.
The flagged scanner-related files implement local security scanning and report generation rather than concealed execution.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetworkShell

Source & flagged code

11 flagged

package.jsonView file

•scripts.postinstall = node scripts/postinstall.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.mjs

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

dist/src/ci-issue.jsView file

Lines 1-21javascript

1import { execFile } from "node:child_process";

2import { mkdtemp, rm, writeFile } from "node:fs/promises";

High

Child Process

Package source references child process execution.

dist/src/ci-issue.jsView on unpkg · L1

3import { tmpdir } from "node:os";

4import path from "node:path";

5/**

6 * Run a command via execFile and return { stdout, stderr }.

7 */

8export function execCommand(cmd, args) {

9 return new Promise((resolve, reject) => {

10 execFile(cmd, args, (error, stdout, stderr) => {

11 if (error) {

12 reject(error instanceof Error

13 ? error

14 : new Error(typeof error === "string" ? error : "Command failed."));

15 }

16 else {

17 resolve({ stdout: stdout ?? "", stderr: stderr ?? "" });

18 }

19 });

20 });

21}

dist/src/commands/demo.jsView file

Lines 1-32javascript

1import { createRequire } from "node:module";

2import path from "node:path";

3import { fileURLToPath } from "node:url";

4import { runTarget } from "../index.js";

dist/src/commands/test.jsView file

242try { L243: execSync("command -v mcp-seatbelt 2>/dev/null || npx @kryptosai/mcp-seatbelt --version 2>/dev/null", { L244: stdio: "pipe",

High

Runtime Package Install

Package source invokes a package manager install command at runtime.

dist/src/commands/test.jsView on unpkg · L242

dist/src/checks/skill-scan.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 6

High

Semantic Analysis Limited

A bounded semantic-analysis stage reached its safety limit; remaining detectors completed, but this package requires AI review.

dist/src/checks/skill-scan.js#virtual:normalized:round1View on unpkg

dist/src/commands/helpers.jsView file

•matchType = normalized_sha256 matchedPackage = @kryptosai/mcp-observatory@1.36.4 matchedPath = dist/src/commands/helpers.js matchedIdentity = npm:[redacted]:1.36.4 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/src/commands/helpers.jsView on unpkg

dist/src/risk-graph.jsView file

•matchType = normalized_sha256 matchedPackage = @kryptosai/mcp-observatory@1.36.4 matchedPath = dist/src/risk-graph.js matchedIdentity = npm:[redacted]:1.36.4 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/src/risk-graph.jsView on unpkg

dist/src/checks/attack-sim.jsView file

•matchType = normalized_sha256 matchedPackage = @kryptosai/mcp-observatory@1.36.4 matchedPath = dist/src/checks/attack-sim.js matchedIdentity = npm:[redacted]:1.36.4 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/src/checks/attack-sim.jsView on unpkg

dist/src/utils/failure-diagnosis.jsView file

•matchType = normalized_sha256 matchedPackage = @kryptosai/mcp-observatory@1.36.4 matchedPath = dist/src/utils/failure-diagnosis.js matchedIdentity = npm:[redacted]:1.36.4 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/src/utils/failure-diagnosis.jsView on unpkg

dist/src/checks/skill-scan.jsView file

•matchType = previous_version_dangerous_delta matchedPackage = @kryptosai/mcp-observatory@1.44.1 matchedIdentity = npm:[redacted]:1.44.1 similarity = 0.974 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.

dist/src/checks/skill-scan.jsView on unpkg

Source & flagged code

11 flagged · loading source

package.jsonView file

•scripts.postinstall = node scripts/postinstall.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.mjs

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

dist/src/ci-issue.jsView file

1import { execFile } from "node:child_process"; L2: import { mkdtemp, rm, writeFile } from "node:fs/promises";

High

Child Process

Package source references child process execution.

dist/src/ci-issue.jsView on unpkg · L1

Findings

1 Critical9 High5 Medium4 Low

CriticalPrevious Version Dangerous Deltadist/src/checks/skill-scan.js

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processdist/src/ci-issue.js

HighShell

HighRuntime Package Installdist/src/commands/test.js

HighSemantic Analysis Limiteddist/src/checks/skill-scan.js#virtual:normalized:round1

HighKnown Malware Source Similaritydist/src/commands/helpers.js

HighKnown Malware Source Similaritydist/src/risk-graph.js

HighKnown Malware Source Similaritydist/src/checks/attack-sim.js

HighKnown Malware Source Similaritydist/src/utils/failure-diagnosis.js

MediumAmbiguous Install Lifecycle Scriptpackage.json

Affected versions and remediation

This report applies to @kryptosai/mcp-observatory@1.44.2.

See all versions of @kryptosai/mcp-observatory for other recorded verdicts.

Review the evidence and your use of @kryptosai/mcp-observatory@1.44.2 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: 2026-09-01 16:36:20.152Z (UTC).

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

AI Security Review

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Runtime surface

Behavioral surface

Source & flagged code