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@polymorphism-tech/morph-spec@8.20.0: AI-agent control-surface | LPM Firewall

registry / @polymorphism-tech/morph-spec / 8.20.0

@polymorphism-tech/morph-spec@8.20.0

MORPH-SPEC: NLH (Natural Language Harness) for spec-driven development with Claude Code

AI Security Review

scanned 4d ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. npm postinstall modifies the global Claude Code configuration and installs a command invoked in every Claude Code session.

Static reason

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

Trigger

npm installation of the package

Impact

Creates a persistent, broad AI-agent execution surface outside the installed project.

Mechanism

unconsented global Claude statusline registration

Policy narrative

Installing the package runs its postinstall script, which copies package-provided statusline scripts into ~/.claude and overwrites the global statusLine command in ~/.claude/settings.json. This causes package-controlled code to run for every Claude Code session, including unrelated projects, without an explicit user command or consent. The same postinstall also attempts to modify PowerShell profiles on Windows.

Rationale

The postinstall creates a foreign, global Claude Code control surface rather than limiting setup to an explicit CLI command or the target project. This meets the blocking policy despite no confirmed exfiltration endpoint.

Evidence

package.jsonsrc/scripts/global-install.jssrc/utils/hooks-installer.jsframework/hooks/claude-code/statusline.py~/.claude/statusline.sh~/.claude/statusline.py~/.claude/settings.json~/Documents/PowerShell/Microsoft.PowerShell_profile.ps1~/Documents/WindowsPowerShell/Microsoft.PowerShell_profile.ps1

Source & flagged code

17 flagged · loading source

package.jsonView file

•scripts.postinstall = node src/scripts/global-install.js

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

framework/hooks/claude-code/core/post-edit-typecheck.jsView file

23L24: import { execSync } from 'child_process'; L25: import { readFileSync, writeFileSync, mkdirSync, existsSync } from 'fs';

High

Child Process

Package source references child process execution.

framework/hooks/claude-code/core/post-edit-typecheck.jsView on unpkg · L23

108try { L109: execSync('npx tsc --noEmit', { cwd: root, stdio: 'pipe', timeout: TSC_TIMEOUT_MS }); L110: return null;

High

Runtime Package Install

Package source invokes a package manager install command at runtime.

framework/hooks/claude-code/core/post-edit-typecheck.jsView on unpkg · L108

src/scripts/global-install.jsView file

48} else { L49: await mkdir(dirname(profilePath), { recursive: true }); L50: } ... L73: label: 'statusline', L74: path: '~/.claude/', L75: error: statuslineResult.reason?.message,

Critical

Ai Agent Control Hijack

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

src/scripts/global-install.jsView on unpkg · L48

14* Ensure the npm global bin directory is in the user's PATH on Windows. L15: * Adds it to the PowerShell $PROFILE so new terminals find `morph-spec`. L16: */

High

Shell

Package source references shell execution.

src/scripts/global-install.jsView on unpkg · L14

•Runtime or CLI code links a write operation to an explicit external AI-agent control path: ll_profile.ps1'); const psprofilelegacy = join(homedir(), 'documents', 'windowspowershell', 'microsoft.powershell_profile.ps1'); const marker = '# morph-spec: ensure npm global in path'; const snippet = [ marker, `if ($env:path -notlike "*${npm[redacted](/\\/g, '\\\\')}*") {`, ` $env:path += ";${npmglobaldir}"`, '}', '# end morph-spec path', ].join('\n'); for (const profilepath of [psprofile, psprofilelegacy]) { try { let content = ''; if (existssync(profilepath)) { content = await readfile(profilepath, 'utf8'); if (content.includes(marker)) continue; } else { await mkdir(dirname(profilepath), { recursiv

High

framework/hooks/claude-code/core/chain.jsView file

84try { L85: const mod = await import(pathToFileURL(join(coreDir, `${name}.js`)).href); L86: result = await mod.run(payload);

Medium

Dynamic Require

Package source references dynamic require/import behavior.

framework/hooks/claude-code/core/chain.jsView on unpkg · L84

framework/hooks/claude-code/core/validate-completion.jsView file

53recap = readFileSync(recapPath, 'utf-8'); L54: tasksJson = JSON.parse(readFileSync(tasksJsonPath, 'utf-8')); L55: } catch { ... L138: // Prevent infinite loop L139: if (process.env.MORPH_STOP_HOOK_ACTIVE === '1') return null; L140: ... L148: const { name, feature } = active; L149: const cwd = process.cwd(); L150: const warnings = [];

Low

Weak Crypto

Package source references weak cryptographic algorithms.

framework/hooks/claude-code/core/validate-completion.jsView on unpkg · L53

src/lib/installers/mcp-installer.jsView file

189*/ L190: const { execSync } = require('child_process'); L191: const { createInterface } = require('readline'); L192: L193: const STITCH_URL = 'https://stitch.googleapis.com/mcp'; L194: const PROJECT_ID = '${gcpProject}'; ... L197: const GCLOUD = process.platform === 'win32' L198: ? (process.env.LOCALAPPDATA || '') + '/Google/Cloud SDK/google-cloud-sdk/bin/gcloud.cmd' L199: : 'gcloud';

High

Same File Env Network Execution

A single source file combines environment access, network access, and code or shell execution; review context before blocking.

src/lib/installers/mcp-installer.jsView on unpkg · L189

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.16.0 matchedPath = src/lib/installers/mcp-installer.js matchedIdentity = npm:[redacted]:8.16.0 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/lib/installers/mcp-installer.jsView on unpkg

src/utils/hooks-installer.jsView file

14import { homedir } from 'os'; L15: import { execSync } from 'child_process'; L16: ... L245: try { L246: settings = JSON.parse(await readFile(settingsPath, 'utf-8')); L247: } catch { ... L335: // JSON Schema for IDE auto-complete and validation L336: settings['$schema'] = 'https://json.schemastore.org/claude-code-settings.json'; L337: ... L378: function findPython() { L379: if (process.platform !== 'win32') { L380: for (const cmd of ['python3', 'python']) {

High

Sandbox Evasion Gated Capability

Source gates dangerous network, credential, or execution behavior behind CI, host, platform, time, or geo fingerprint checks.

src/utils/hooks-installer.jsView on unpkg · L14

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.16.0 matchedPath = src/utils/hooks-installer.js matchedIdentity = npm:[redacted]:8.16.0 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/hooks-installer.jsView on unpkg

src/commands/project/update.jsView file

•Manifest-trigger-reachable source links an external AI-agent control path to a behavior-bearing write operation. st commandsdest = join(claudedest, 'commands'); if (await pathexists(commandssrc)) { await copydirectory(commandssrc, commandsdest); commandscopied = true; } else { logger.warn(' ⚠ framework/commands/ source missing — commands not updated'); }

High

Trigger Reachable External Ai Agent Control Surface Mutation

Manifest-trigger-reachable source writes behavior-bearing configuration into a user or project AI-agent control surface.

src/commands/project/update.jsView on unpkg

framework/hooks/claude-code/statusline.pyView file

•path = framework/hooks/claude-code/statusline.py kind = build_helper sizeBytes = 28396 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

framework/hooks/claude-code/statusline.pyView on unpkg

src/commands/dashboard/dashboard.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.16.0 matchedPath = [redacted].js matchedIdentity = npm:[redacted]:8.16.0 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/dashboard/dashboard.jsView on unpkg

src/commands/project/doctor.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.16.0 matchedPath = src/commands/project/doctor.js matchedIdentity = npm:[redacted]:8.16.0 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/project/doctor.jsView on unpkg

src/commands/project/init.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.16.0 matchedPath = src/commands/project/init.js matchedIdentity = npm:[redacted]:8.16.0 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/project/init.jsView on unpkg

Source & flagged code

17 flagged

package.jsonView file

Lines 39-79json

39 "engines": {

40 "node": ">=22.0.0"

41 },

42 "scripts": {

43 "start": "node bin/morph-spec.js",

44 "generate": "node scripts/generate-refs.js",

45 "generate:check": "node scripts/generate-refs.js --check",

46 "generate-standards": "node scripts/generate-standards-registry.js",

47 "generate-standards:check": "node scripts/generate-standards-registry.js --check",

48 "validate": "node scripts/validate-framework.js && node scripts/check-rubric-parity.js",

49 "freshness": "node scripts/check-freshness.js",

50 "verify": "npm run generate:check && npm run generate-standards:check && npm run validate && npm run freshness && npm test",

51 "test": "node scripts/run-tests.mjs",

52 "test:coverage": "c8 --reporter=text --reporter=html --reporter=lcov node scripts/run-tests.mjs",

53 "test:coverage:summary": "c8 --reporter=text-summary node scripts/run-tests.mjs",

54 "docs": "jsdoc -c jsdoc.json",

55 "docs:watch": "jsdoc -c jsdoc.json --watch",

56 "docs:serve": "npx http-server docs/api -p 8080 -o",

57 "release": "node scripts/release.js",

58 "prepublishOnly": "node scripts/prepublish-check.js",

59 "postinstall": "node src/scripts/global-install.js"

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L59

60 },

61 "dependencies": {

62 "chalk": "^5.3.0",

63 "commander": "^12.0.0",

64 "fs-extra": "^11.2.0",

65 "glob": "^13.0.6",

66 "handlebars": "^4.7.8",

67 "inquirer": "^9.2.0",

68 "minimatch": "^9.0.5",

69 "ora": "^8.0.0"

70 },

71 "repository": {

72 "type": "git",

73 "url": "git+https://github.com/lucasPolymorphism/morph-spec-framework.git"

74 },

75 "author": "Polymorphism Tech <contact@polymorphism.com.br>",

76 "license": "SEE LICENSE IN LICENSE",

77 "homepage": "https://polymorphism.com.br/morph-spec",

78 "bugs": {

79 "email": "support@polymorphism.com.br"

framework/hooks/claude-code/core/post-edit-typecheck.jsView file

Lines 3-43javascript

3/**

4 * PostToolUse Hook: TypeScript typecheck with debounce + build-dirty flag

5 *

6 * Event: PostToolUse | Matcher: Write|Edit

7 *

8 * Runs `npx tsc --noEmit` only for .ts/.tsx files, with a 3-second debounce

9 * so rapid sequential edits (e.g. multiple files in one task) don't each

10 * trigger a full typecheck. Silent on success — only injects on error.

11 *

12 * Also touches `.morph/memory/build-dirty.json` on EVERY Write/Edit of a

src/scripts/global-install.jsView file

Lines 1-68javascript

1// src/scripts/global-install.js

2import { join, dirname } from 'path';

3import { fileURLToPath } from 'url';

4import { homedir, platform } from 'os';

5import { mkdir, readFile, writeFile } from

framework/hooks/claude-code/core/chain.jsView file

Lines 64-104javascript

64

65/** Extrai o texto de contexto de um resultado de hook, se houver. */

66function contextOf(result) {

67 if (!result) return null;

68 if (result.decision ===

framework/hooks/claude-code/core/validate-completion.jsView file

Lines 33-73javascript

33

34/**

35 * Audit recap.md against tasks.json + standard-citation rule.

36 *

37 * Returns an array of human-readable warnings. Empty array = audit clean.

38 *

39 * Two checks:

40 * 1. Task IDs that appear as a "## T<n>" heading in recap.md but still

41 * carry status != 'done' in tasks.json — claim/state divergence.

42 * 2. Task headings without a "**Standard:**" line nearby (within 10 lines

src/lib/installers/mcp-installer.jsView file

Lines 169-209javascript

169 } catch {

170 results.push({ name, repo: companion.repo, success: false });

171 }

172 }

173

174 return results;

175}

176

177/**

src/utils/hooks-installer.jsView file

Lines 1-34javascript

1/**

2 * Claude Code Hooks Installer (v2)

3 *

4 * Registry-based installer for all MORPH-SPEC Claude Code hooks.

5 * Declarative MORPH_HOOKS array defines all hooks.

6 * Idempotent merge into .claude/settings.local.json.

7 *

8 * Called by `morph-spec init` and `morph-spec update`.

9 */

10

11import { join, dirname }

src/commands/project/update.jsView file

•Manifest-trigger-reachable source links an external AI-agent control path to a behavior-bearing write operation. st commandsdest = join(claudedest, 'commands'); if (await pathexists(commandssrc)) { await copydirectory(commandssrc, commandsdest); commandscopied = true; } else { logger.warn(' ⚠ framework/commands/ source missing — commands not updated'); }

High

Trigger Reachable External Ai Agent Control Surface Mutation

Manifest-trigger-reachable source writes behavior-bearing configuration into a user or project AI-agent control surface.

src/commands/project/update.jsView on unpkg

framework/hooks/claude-code/statusline.pyView file

•path = framework/hooks/claude-code/statusline.py kind = build_helper sizeBytes = 28396 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

framework/hooks/claude-code/statusline.pyView on unpkg

src/commands/dashboard/dashboard.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.16.0 matchedPath = [redacted].js matchedIdentity = npm:[redacted]:8.16.0 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/dashboard/dashboard.jsView on unpkg

src/commands/project/doctor.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.16.0 matchedPath = src/commands/project/doctor.js matchedIdentity = npm:[redacted]:8.16.0 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/project/doctor.jsView on unpkg

src/commands/project/init.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.16.0 matchedPath = src/commands/project/init.js matchedIdentity = npm:[redacted]:8.16.0 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/project/init.jsView on unpkg