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@polymorphism-tech/morph-spec@8.27.0: AI-agent control-surface | LPM Firewall

registry / @polymorphism-tech/morph-spec / 8.27.0

@polymorphism-tech/morph-spec@8.27.0

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

AI Security Review

scanned 9h ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. Installation silently changes the user's global Claude Code configuration to execute package-provided code in every session. It additionally persists a PATH change in Windows PowerShell profiles.

Static reason

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

Trigger

npm install / dependency installation

Impact

Persistent execution of package code across unrelated Claude Code sessions and altered shell startup behavior.

Mechanism

postinstall writes global Claude statusLine command and shell profiles

Policy narrative

On npm installation, package.json runs global-install.js. That script copies package-controlled statusline scripts into ~/.claude and sets ~/.claude/settings.json to run them as the status line in every Claude Code session, including unrelated projects. On Windows it also appends a PATH-changing block to both PowerShell profile locations. This is an unconsented install-time mutation of broad AI-agent and shell control surfaces.

Rationale

The package has a concrete postinstall persistence chain affecting global Claude Code settings and shell profiles. Although the inspected statusline contains no observed exfiltration, the unconsented broad control-surface mutation meets the blocking policy.

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

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

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.23.0 matchedPath = framework/hooks/claude-code/core/post-edit-typecheck.js matchedIdentity = npm:[redacted]:8.23.0 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.

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

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

54recap = readFileSync(recapPath, 'utf-8'); L55: tasksJson = JSON.parse(readFileSync(tasksJsonPath, 'utf-8')); L56: } catch { ... L216: // Prevent infinite loop L217: if (process.env.MORPH_STOP_HOOK_ACTIVE === '1') return null; L218: ... L226: const { name, feature } = active; L227: const cwd = process.cwd(); L228: const warnings = [];

Low

Weak Crypto

Package source references weak cryptographic algorithms.

framework/hooks/claude-code/core/validate-completion.jsView on unpkg · L54

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@8.23.0 matchedPath = src/lib/installers/mcp-installer.js matchedIdentity = npm:[redacted]:8.23.0 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: ... L249: try { L250: settings = JSON.parse(await readFile(settingsPath, 'utf-8')); L251: } catch { ... L339: // JSON Schema for IDE auto-complete and validation L340: settings['$schema'] = 'https://json.schemastore.org/claude-code-settings.json'; L341: ... L382: function findPython() { L383: if (process.platform !== 'win32') { L384: 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

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@8.23.0 matchedPath = [redacted].js matchedIdentity = npm:[redacted]:8.23.0 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@8.23.0 matchedPath = src/commands/project/doctor.js matchedIdentity = npm:[redacted]:8.23.0 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@8.23.0 matchedPath = src/commands/project/init.js matchedIdentity = npm:[redacted]:8.23.0 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 34-74javascript

34

35/**

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

37 *

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

39 *

40 * Two checks:

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

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

43 * 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@8.23.0 matchedPath = [redacted].js matchedIdentity = npm:[redacted]:8.23.0 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@8.23.0 matchedPath = src/commands/project/doctor.js matchedIdentity = npm:[redacted]:8.23.0 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@8.23.0 matchedPath = src/commands/project/init.js matchedIdentity = npm:[redacted]:8.23.0 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