registry / AI-agent capability abuse / @kryptosai/mcp-observatory / 1.46.0

@kryptosai/mcp-observatory@1.46.0

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 14d ago · by lpm-firewall-ai

The package has an explicit CLI capability to alter MCP client configuration, including discovered user-level configs, which warrants a warning under the agent configuration policy. The inspected postinstall helper does not invoke that capability, and its separate CI setup requires opt-in.

Static reason

One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review

Trigger

A user runs the package's `protect` command.

Impact

MCP clients may launch configured servers through the wrapper, which requires a passing local receipt unless its allow-fail option is used.

Mechanism

The command scans an explicit config or discovered configs, wraps stdio server commands with the package's fail-closed wrapper, and writes a backup before saving the changes.

AI rationale

Evidence

dist/src/commands/handshake.jsdist/src/handshake.jsdist/src/discovery.jsMCP client config files selected by `protect`A `.observatory.bak` backup beside each changed config

Decision evidence

public snapshot

AI called this Suspicious at 90.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

The explicit `protect` command can target a supplied MCP config or discover multiple client configs.
The protect operation rewrites configured server commands to run through the package wrapper and saves a backup.
Discovered configuration locations include user-level agent configuration files.
The wrapper checks for a passing local receipt before starting the configured server.
The postinstall hook is gated and only continues for an MCP project; its automatic CI setup requires an opt-in.

Evidence against

The configuration mutation is exposed through an explicit CLI command, with an undo option; the inspected code does not invoke it during installation.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetworkShell

Supply chain

HighEntropyStringsUrlStrings

Manifest

Source & flagged code

9 flagged

package.jsonView file

Lines 85-125json

85 "docs/target-registry.md",

86 "docs/tool-call-receipts.md",

87 "examples/demo-mcp-server.mjs",

88 "examples/insecure-mcp-server",

89 "scripts/postinstall.mjs",

90 "schemas",

91 "docs/usage-learning.md",

92 "examples/usage-learning.mjs"

93 ],

94 "scripts": {

95 "build": "tsc -p tsconfig.json",

96 "cli": "tsx src/cli.ts",

97 "dashboard:build": "tsx scripts/build-dashboard.ts",

98 "dashboard:validate": "node scripts/validate-dashboard.mjs",

99 "integration:real": "tsx scripts/run-real-server-matrix.ts",

100 "evaluate:permission-delta": "tsx scripts/evaluate-permission-delta-conformance.ts",

101 "evaluate:permission-delta:mcp-diff": "tsx scripts/run-mcp-diff-baseline.ts",

102 "safety-index": "tsx scripts/run-safety-index.ts",

103 "lint": "eslint .",

104 "prepack": "npm run build",

105 "postinstall": "node scripts/postinstall.mjs",

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L105

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L105

106 "proof:refresh": "tsx scripts/refresh-proof-artifacts.ts",

107 "release:prep": "node scripts/release.mjs",

108 "certification:pr-body": "tsx scripts/print-certification-pr-body.ts",

109 "typecheck": "tsc --noEmit -p tsconfig.json",

110 "test": "vitest run",

111 "test:permission-delta-model": "vitest run tests/permission-delta-model.test.ts",

112 "test:coverage": "vitest run --coverage",

113 "validate:artifacts": "tsx scripts/validate-artifacts.ts",

114 "verify:packed-install": "node scripts/verify-packed-install.mjs",

115 "smoke": "npm run cli -- run --target tests/fixtures/sample-target-config.json && npm run cli -- diff tests/fixtures/sample-run-a.json tests/fixtures/sample-run-b.json",

116 "boundary:check": "node scripts/check-repository-boundary.mjs"

117 },

118 "keywords": [

119 "mcp",

120 "mcp-server",

121 "model-context-protocol",

122 "ai-agent",

123 "agent-security",

124 "ai-supply-chain",

125 "ai-tools",

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";

dist/src/commands/demo.jsView file

Lines 1-31javascript

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

Lines 222-262javascript

222 }

223 else {

224 await maybeConvertPassingCheckToCi({

225 artifact,

226 target,

227 targetPath: options.target,

228 setupCi: conversionFlags.setupCi,

229 yes: conversionFlags.yes,

230

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/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

Source & flagged code

9 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

8 High5 Medium4 Low

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/utils/failure-diagnosis.js

MediumAmbiguous Install Lifecycle Scriptpackage.json

MediumDynamic Requiredist/src/commands/demo.js

MediumNetwork

MediumEnvironment Vars

Affected versions and remediation

This report applies to @kryptosai/mcp-observatory@1.46.0.

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

Review the evidence and your use of @kryptosai/mcp-observatory@1.46.0 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: 2026-10-09 16:54:53.309Z (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