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@polymorphism-tech/morph-spec@9.0.0: AI-agent control-surface | LPM Firewall

registry / @polymorphism-tech/morph-spec / 9.0.0

@polymorphism-tech/morph-spec@9.0.0

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. Installation automatically changes the user's global Claude Code command configuration. This affects sessions beyond projects using this package.

Static reason

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

Trigger

npm postinstall execution during package installation.

Impact

Replaces the user's global statusline command and causes Claude Code sessions to invoke package-installed code.

Mechanism

The lifecycle script copies statusline scripts into the global .claude directory and overwrites the statusLine setting with a package-provided command, without consent.

Policy narrative

The npm postinstall hook invokes the global statusline installer directly. Its default effects implementation writes files rather than simulating changes. The installer places scripts in the user's global Claude Code directory and merges a command-bearing statusLine value into global settings, overwriting the existing value without a consent gate. This is automatic mutation of a foreign, broad agent control surface.

AI rationale

The inspected source establishes unconsented postinstall mutation of global Claude Code command settings, which meets the blocking policy. Package-aligned statusline functionality does not exempt automatic changes to this broad control surface.

Evidence

package.jsonsrc/scripts/global-install.jssrc/utils/hooks-installer.jssrc/lib/installers/effects.js~/.claude/settings.json~/.claude/statusline.sh~/.claude/statusline.py

Source & flagged code

20 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

bin/morph-spec.jsView file

23// that breaks at import time still fails the suite, not only its own command. L24: const lazy = (path, name) => async (...args) => (await import(path))[name](...args); L25:

Medium

Dynamic Require

Package source references dynamic require/import behavior.

bin/morph-spec.jsView on unpkg · L23

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

67// Prevent infinite loop L68: if (process.env.MORPH_STOP_HOOK_ACTIVE === '1') return null; L69: ... L77: const { name, feature } = active; L78: const cwd = process.cwd(); L79: const warnings = []; ... L89: try { L90: if (existsSync(watchPath)) phaseWatch = JSON.parse(readFileSync(watchPath, 'utf-8')); L91: } catch { /* corrupt file — start fresh */ }

Low

Weak Crypto

Package source references weak cryptographic algorithms.

framework/hooks/claude-code/core/validate-completion.jsView on unpkg · L67

src/utils/hooks-installer.jsView file

14import { homedir } from 'os'; L15: import { execSync } from 'child_process'; L16: import { realEffects } from '../lib/installers/effects.js'; ... L196: // (measured: all three fire it). The hook prints the created path as its L197: // last stdout line; a non-zero exit fails the creation. No matcher exists L198: // for this event. 120s: it spawns the morph-spec CLI (setup or provision), ... L365: try { L366: settings = JSON.parse(await readFile(settingsPath, 'utf-8')); L367: } catch { ... L456: // JSON Schema for IDE auto-complete and validation L457: settings['$schema'] = 'https://json.schemastore.org/claude-code-settings.json'; L458:

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/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

•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

External Ai Agent Control Surface Mutation

Runtime or CLI source writes behavior-bearing configuration into a user or project AI-agent control surface.

src/scripts/global-install.jsView on unpkg

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

•path = framework/hooks/claude-code/statusline.py kind = build_helper sizeBytes = 28836 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

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

framework/templates/code/typescript/contracts.tsView file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 9

High

Semantic Analysis Limited

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

framework/templates/code/typescript/contracts.tsView on unpkg

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

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.46.0 matchedPath = src/lib/installers/mcp-installer.js matchedIdentity = npm:[redacted]:8.46.0 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

framework/hooks/shared/agent-reap.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.46.0 matchedPath = framework/hooks/shared/agent-reap.js matchedIdentity = npm:[redacted]:8.46.0 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/shared/agent-reap.jsView on unpkg

framework/hooks/shared/graph-refresh.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.46.0 matchedPath = framework/hooks/shared/graph-refresh.js matchedIdentity = npm:[redacted]:8.46.0 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/shared/graph-refresh.jsView on unpkg

src/commands/dashboard/dashboard.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.46.0 matchedPath = [redacted].js matchedIdentity = npm:[redacted]:8.46.0 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/lib/procs/list.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.46.0 matchedPath = src/lib/procs/list.js matchedIdentity = npm:[redacted]:8.46.0 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/procs/list.jsView on unpkg

src/commands/mcp/mcp-setup.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.46.0 matchedPath = src/commands/mcp/mcp-setup.js matchedIdentity = npm:[redacted]:8.46.0 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/mcp/mcp-setup.jsView on unpkg

src/commands/project/worktree.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.46.0 matchedPath = src/commands/project/worktree.js matchedIdentity = npm:[redacted]:8.46.0 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/worktree.jsView on unpkg

src/lib/worktree/agent-reaper.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.46.0 matchedPath = src/lib/worktree/agent-reaper.js matchedIdentity = npm:[redacted]:8.46.0 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/worktree/agent-reaper.jsView on unpkg

src/lib/worktree/vscode-settings.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.46.0 matchedPath = src/lib/worktree/vscode-settings.js matchedIdentity = npm:[redacted]:8.46.0 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/worktree/vscode-settings.jsView on unpkg

src/utils/version-checker.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.46.0 matchedPath = src/utils/version-checker.js matchedIdentity = npm:[redacted]:8.46.0 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/version-checker.jsView on unpkg

src/lib/ci/github-ci.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.46.0 matchedPath = src/lib/ci/github-ci.js matchedIdentity = npm:[redacted]:8.46.0 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/ci/github-ci.jsView on unpkg

src/lib/generators/architecture-scanner.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.46.0 matchedPath = src/lib/generators/architecture-scanner.js matchedIdentity = npm:[redacted]:8.46.0 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/generators/architecture-scanner.jsView on unpkg