karajan-code@4.51.1

Local multi-agent coding orchestrator with TDD, SonarQube, and code review pipeline

AI Security Review

scanned 10d ago · by lpm-firewall-ai

The active postinstall hook makes an unprompted change to two AI-agent configurations by registering the package’s own local MCP server. This matches the warning-only policy for first-party agent extension setup; the inspected source does not establish credential theft or another concrete attack.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review

Trigger

Installing the package with npm, which runs its postinstall hook.

Impact

Claude Code and Codex can gain the package’s MCP tools automatically after installation.

Mechanism

The hook writes a karajan-mcp entry that launches the package’s local MCP server through Node and stdio.

AI rationale

Evidence

package.jsonscripts/postinstall.js~/.claude.json~/.codex/config.toml

Decision evidence

public snapshot

AI called this Suspicious at 93.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

package.json runs scripts/postinstall.js during npm installation.
The hook writes karajan-mcp registrations into the user’s Claude Code and Codex configuration without a consent check.
The registration starts this package’s local MCP server over stdio.
Other inspected agent integrations are CLI-driven or read-only, which limits the confirmed concern to the automatic MCP setup.

Evidence against

The registered command points to the package’s own local server; the inspected setup does not send credentials or data to a network endpoint.
The separate ai-trash hook installer requires an explicit install command with --claude-code.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetworkShellWebSocket

Supply chain

HighEntropyStringsUrlStrings

Manifest

Source & flagged code

24 flagged

package.jsonView file

•scripts.postinstall = node scripts/postinstall.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.js

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

scripts/dual-publish.mjsView file

17import { readFileSync, writeFileSync } from "node:fs"; L18: import { execFileSync } from "node:child_process"; L19: import { join, dirname, resolve } from "node:path";

High

Child Process

Package source references child process execution.

scripts/dual-publish.mjsView on unpkg · L17

src/review/card-verify.jsView file

17L18: const execAsync = promisify(exec); L19: export const VERIFY_TIMEOUT_MS = 4000;

High

Shell

Package source references shell execution.

src/review/card-verify.jsView on unpkg · L17

scripts/verify-pack.mjsView file

114// pattern lookalikes). L115: const { scanPaths, loadPrivacyList } = await import( L116: path.join(repoRoot, "src", "privacy", "scan.js")

Medium

Dynamic Require

Package source references dynamic require/import behavior.

scripts/verify-pack.mjsView on unpkg · L114

src/sonar/project-key.jsView file

•matchType = normalized_sha256 matchedPackage = karajan-code@4.49.3 matchedPath = src/sonar/project-key.js matchedIdentity = npm:a2FyYWphbi1jb2Rl:4.49.3 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.

src/sonar/project-key.jsView on unpkg

83const explicit = String( L84: options.projectKey || process.env.KJ_SONAR_PROJECT_KEY || config?.sonarqube?.project_key || "" L85: ).trim(); ... L99: const remote = await runCommand("git", ["config", "--get", "remote.origin.url"]); L100: const remoteUrl = String(remote.stdout || "").trim(); L101: if (remote.exitCode !== 0 || !remoteUrl) {

Low

Weak Crypto

Package source references weak cryptographic algorithms.

src/sonar/project-key.jsView on unpkg · L83

scripts/install.jsView file

4import path from "node:path"; L5: import { spawn } from "node:child_process"; L6: import readline from "node:readline/promises"; L7: import { stdin as input, stdout as output } from "node:process"; L8: import { tomlPath } from "./toml-value.js"; ... L10: const rl = readline.createInterface({ input, output }); L11: const REGISTRY_PATH = path.join(os.homedir(), ".karajan", "instances.json"); L12: const INSTALL_STATE_PATH = path.join(os.homedir(), ".karajan", "install-state.json"); L13: const AGENT_META = { L14: codex: { bin: "codex", installUrl: "https://developers.openai.com/codex/cli" }, L15: claude: { bin: "claude", installUrl: "https://docs.anthropic.com/en/docs/claude-code" }, ... L120: if (cliValue !== undefined) return cliValue;

Medium

Install Persistence

Source writes installer persistence such as shell profile or service configuration.

scripts/install.jsView on unpkg · L4

scripts/postinstall.jsView file

26await fs.mkdir(path.dirname(file), { recursive: true }); L27: await fs.writeFile(file, `${JSON.stringify(obj, null, 2)}\n`, "utf8"); L28: } L29: L30: const CLAUDE_JSON_PATH = path.join(os.homedir(), ".claude.json"); L31: ... L77: async function setupClaudeMcp(config, kjHome) { L78: config.mcpServers = config.mcpServers || {}; L79: // Keep every env key the user added to the entry; only the home is ours, L80: // and it is written under the current name (KJ_HOME is deprecated). L81: const { KJ_HOME: _stale, ...userEnv } = config.mcpServers["karajan-mcp"]?.env || {}; L82: config.mcpServers["karajan-mcp"] = {

Critical

Ai Agent Control Hijack

Source creates an unconsented AI-agent control surface through install-time mutation or a default unauthenticated remote skill channel.

scripts/postinstall.jsView on unpkg · L26

src/audit/basal-cost.jsView file

76return new Promise((resolve) => { L77: execFile("npx", ["depcheck", "--json"], { cwd: projectDir, timeout: 30000 }, (err, stdout) => { L78: if (err && !stdout) {

High

Runtime Package Install

Package source invokes a package manager install command at runtime.

src/audit/basal-cost.jsView on unpkg · L76

vendor/tree-sitter-grammars/python.wasmView file

•path = vendor/tree-sitter-grammars/python.wasm kind = wasm_module sizeBytes = 457883 magicHex = [redacted]

Medium

Ships Wasm Module

Package ships WebAssembly modules.

vendor/tree-sitter-grammars/python.wasmView on unpkg

scripts/install-binary.shView file

•path = scripts/install-binary.sh kind = build_helper sizeBytes = 7790 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

scripts/install-binary.shView on unpkg

bin/kj-tailView file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 24

High

Semantic Analysis Limited

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

bin/kj-tailView on unpkg

src/cli/register-meta.jsView file

•matchType = token_shingles matchedPackage = karajan-code@4.49.3 matchedPath = src/cli/register-meta.js matchedIdentity = npm:a2FyYWphbi1jb2Rl:4.49.3 similarity = 1.000 shingleOverlap = 48 summary = source token shingles overlapped finalized malicious source

High

Known Malware Source Similarity

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

src/cli/register-meta.jsView on unpkg

src/commands/board.jsView file

•matchType = normalized_sha256 matchedPackage = karajan-code@4.49.3 matchedPath = src/commands/board.js matchedIdentity = npm:a2FyYWphbi1jb2Rl:4.49.3 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.

src/commands/board.jsView on unpkg

src/utils/update-check.jsView file

•matchType = normalized_sha256 matchedPackage = karajan-code@4.49.3 matchedPath = src/utils/update-check.js matchedIdentity = npm:a2FyYWphbi1jb2Rl:4.49.3 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.

src/utils/update-check.jsView on unpkg

packages/ai-trash/src/git-snapshot.jsView file

•matchType = normalized_sha256 matchedPackage = karajan-code@4.49.3 matchedPath = packages/ai-trash/src/git-snapshot.js matchedIdentity = npm:a2FyYWphbi1jb2Rl:4.49.3 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.

packages/ai-trash/src/git-snapshot.jsView on unpkg

src/commands/audit.jsView file

•matchType = normalized_sha256 matchedPackage = karajan-code@4.49.3 matchedPath = src/commands/audit.js matchedIdentity = npm:a2FyYWphbi1jb2Rl:4.49.3 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.

src/commands/audit.jsView on unpkg

src/commands/go.jsView file

•matchType = normalized_sha256 matchedPackage = karajan-code@4.49.3 matchedPath = src/commands/go.js matchedIdentity = npm:a2FyYWphbi1jb2Rl:4.49.3 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.

src/commands/go.jsView on unpkg

src/commands/install-tools.jsView file

•matchType = normalized_sha256 matchedPackage = karajan-code@4.49.3 matchedPath = src/commands/install-tools.js matchedIdentity = npm:a2FyYWphbi1jb2Rl:4.49.3 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.

src/commands/install-tools.jsView on unpkg

src/hu/store.jsView file

•matchType = normalized_sha256 matchedPackage = karajan-code@4.49.3 matchedPath = src/hu/store.js matchedIdentity = npm:a2FyYWphbi1jb2Rl:4.49.3 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.

src/hu/store.jsView on unpkg

src/utils/tool-installer.jsView file

•matchType = normalized_sha256 matchedPackage = karajan-code@4.49.3 matchedPath = src/utils/tool-installer.js matchedIdentity = npm:a2FyYWphbi1jb2Rl:4.49.3 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.

src/utils/tool-installer.jsView on unpkg

src/checks/mcp-health.jsView file

•matchType = normalized_sha256 matchedPackage = karajan-code@4.49.3 matchedPath = src/checks/mcp-health.js matchedIdentity = npm:a2FyYWphbi1jb2Rl:4.49.3 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.

src/checks/mcp-health.jsView on unpkg

src/commands/init.jsView file

•matchType = normalized_sha256 matchedPackage = karajan-code@4.49.3 matchedPath = src/commands/init.js matchedIdentity = npm:a2FyYWphbi1jb2Rl:4.49.3 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.

src/commands/init.jsView on unpkg

Source & flagged code

24 flagged · loading source

package.jsonView file

•scripts.postinstall = node scripts/postinstall.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.js

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg

scripts/dual-publish.mjsView file

17import { readFileSync, writeFileSync } from "node:fs"; L18: import { execFileSync } from "node:child_process"; L19: import { join, dirname, resolve } from "node:path";

High

Child Process

Package source references child process execution.

scripts/dual-publish.mjsView on unpkg · L17

Findings

1 Critical17 High8 Medium7 Low

CriticalAi Agent Control Hijackscripts/postinstall.js

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processscripts/dual-publish.mjs

HighShellsrc/review/card-verify.js

HighRuntime Package Installsrc/audit/basal-cost.js

HighSemantic Analysis Limitedbin/kj-tail

HighKnown Malware Source Similaritysrc/cli/register-meta.js

HighKnown Malware Source Similaritysrc/commands/board.js

HighKnown Malware Source Similaritysrc/utils/update-check.js

HighKnown Malware Source Similaritypackages/ai-trash/src/git-snapshot.js

HighKnown Malware Source Similaritysrc/commands/audit.js

Affected versions and remediation

This report applies to karajan-code@4.51.1.

See all versions of karajan-code for other recorded verdicts.

Review the evidence and your use of karajan-code@4.51.1 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: 2026-10-13 15:25:56.929Z (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