registry / @polymorphism-tech/morph-spec / 9.5.0

@polymorphism-tech/morph-spec@9.5.0

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

AI Security Review

scanned 4d ago · by lpm-firewall-ai

The package automatically configures a first-party statusline in global Claude settings, so a lifecycle-related agent extension warning is warranted. The inspected evidence does not establish malicious behavior, while an unresolved executable helper prevents a clean assurance.

Static reason

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

Trigger

Installing the package with npm triggers its postinstall script.

Impact

The global setting causes package code to run in Claude's statusline lifecycle. The unresolved shared helper prevents full behavioral assurance, but the inspected evidence does not establish a concrete attack.

Mechanism

The hook copies statusline scripts into the user's Claude directory and sets a global statusline command. On Windows, selecting the command may attempt to install Python if it is missing.

AI rationale

Evidence

package.jsonsrc/scripts/global-install.jssrc/utils/hooks-installer.jsframework/hooks/claude-code/statusline.pyframework/hooks/shared/e2e-check.js.lpm-inspection-5uD18E/0-ff88b4a07a6e.txt~/.claude/settings.json

Decision evidence

public snapshot

AI called this Suspicious at 84.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

The package's postinstall launches global-install.js, which calls the global statusline installer automatically.
That installer copies package scripts into the user's Claude directory and merges a command into global Claude settings; on Windows, selecting that command may attempt to install Python if it is missing.
A Claude telemetry hook imports the shared e2e helper, whose offline analysis identifies it as an unrecognized executable artifact and leaves its behavior unresolved.
The other inspected agent-integration locations concern a plugin check, project-local settings and MCP bookkeeping, worktree operations, or an explicit plugin command.

Evidence against

The statusline reads Claude-provided JSON and derives the workspace directory for display.
The plugin installer is exposed as a CLI command that requires a plugin name.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetworkShell

Source & flagged code

20 flagged

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

10// Lazy: eager import of every command cost ~700 ms per invocation, paid by each hook that shells out. L11: const lazy = (path, name) => async (...args) => (await import(path))[name](...args); L12:

Medium

Dynamic Require

Package source references dynamic require/import behavior.

bin/morph-spec.jsView on unpkg · L10

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

41try { L42: if (process.env.MORPH_STOP_HOOK_ACTIVE === '1') return null; L43: ... L49: const { name, feature } = active; L50: const cwd = process.cwd(); L51: const warnings = []; ... L60: try { L61: if (existsSync(watchPath)) phaseWatch = JSON.parse(readFileSync(watchPath, 'utf-8')); L62: } catch { /* corrupt file — start fresh */ }

Low

Weak Crypto

Package source references weak cryptographic algorithms.

framework/hooks/claude-code/core/validate-completion.jsView on unpkg · L41

src/utils/hooks-installer.jsView file

4import { homedir } from 'os'; L5: import { execSync } from 'child_process'; L6: import { realEffects } from '../lib/installers/effects.js'; ... L190: try { L191: settings = JSON.parse(await readFile(settingsPath, 'utf-8')); L192: } catch { ... L264: L265: settings['$schema'] = 'https://json.schemastore.org/claude-code-settings.json'; L266: ... L295: function findPython() { L296: if (process.platform !== 'win32') { L297: 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 · L4

•matchType = token_shingles matchedPackage = @polymorphism-tech/morph-spec@9.0.0 matchedPath = src/utils/hooks-installer.js matchedIdentity = npm:[redacted]:9.0.0 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/utils/hooks-installer.jsView on unpkg

src/scripts/global-install.jsView file

43} else { L44: await mkdir(dirname(profilePath), { recursive: true }); L45: } ... L67: label: 'statusline', L68: path: '~/.claude/', L69: 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 · L43

•Runtime or CLI code links a write operation to an explicit external AI-agent control path: , 'documents', 'powershell', 'microsoft.powershell_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(dir

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 = 27345 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

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

framework/hooks/claude-code/core/worktree-context.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 10

High

Semantic Analysis Limited

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

framework/hooks/claude-code/core/worktree-context.js#virtual:normalized:round1View on unpkg

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

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@9.0.0 matchedPath = src/lib/installers/mcp-installer.js matchedIdentity = npm:[redacted]:9.0.0 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@9.0.0 matchedPath = framework/hooks/shared/agent-reap.js matchedIdentity = npm:[redacted]:9.0.0 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@9.0.0 matchedPath = framework/hooks/shared/graph-refresh.js matchedIdentity = npm:[redacted]:9.0.0 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@9.0.0 matchedPath = [redacted].js matchedIdentity = npm:[redacted]:9.0.0 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@9.0.0 matchedPath = src/commands/project/doctor.js matchedIdentity = npm:[redacted]:9.0.0 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@9.0.0 matchedPath = src/commands/project/init.js matchedIdentity = npm:[redacted]:9.0.0 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

src/lib/procs/list.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@9.0.0 matchedPath = src/lib/procs/list.js matchedIdentity = npm:[redacted]:9.0.0 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

framework/hooks/shared/e2e-check.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@9.0.0 matchedPath = framework/hooks/shared/e2e-check.js matchedIdentity = npm:[redacted]:9.0.0 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/e2e-check.jsView on unpkg

src/commands/e2e/e2e.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@9.0.0 matchedPath = src/commands/e2e/e2e.js matchedIdentity = npm:[redacted]:9.0.0 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/e2e/e2e.jsView on unpkg

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

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@9.0.0 matchedPath = src/commands/mcp/mcp-setup.js matchedIdentity = npm:[redacted]:9.0.0 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@9.0.0 matchedPath = src/commands/project/worktree.js matchedIdentity = npm:[redacted]:9.0.0 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

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

10// Lazy: eager import of every command cost ~700 ms per invocation, paid by each hook that shells out. L11: const lazy = (path, name) => async (...args) => (await import(path))[name](...args); L12:

Medium

Dynamic Require

Package source references dynamic require/import behavior.

bin/morph-spec.jsView on unpkg · L10

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

Findings

1 Critical16 High5 Medium7 Low

CriticalAi Agent Control Hijacksrc/scripts/global-install.js

HighInstall Time Lifecycle Scriptspackage.json

HighSandbox Evasion Gated Capabilitysrc/utils/hooks-installer.js

HighExternal Ai Agent Control Surface Mutationsrc/scripts/global-install.js

HighSemantic Analysis Limitedframework/hooks/claude-code/core/worktree-context.js#virtual:normalized:round1

HighKnown Malware Source Similaritysrc/lib/installers/mcp-installer.js

HighKnown Malware Source Similaritysrc/utils/hooks-installer.js

HighKnown Malware Source Similarityframework/hooks/shared/agent-reap.js

HighKnown Malware Source Similarityframework/hooks/shared/graph-refresh.js

HighKnown Malware Source Similarity

Affected versions and remediation

This report applies to @polymorphism-tech/morph-spec@9.5.0.

See all versions of @polymorphism-tech/morph-spec for other recorded verdicts.

Review the evidence and your use of @polymorphism-tech/morph-spec@9.5.0 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: 2026-10-18 23:40:25.238Z (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