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@polymorphism-tech/morph-spec@8.46.0: AI-agent control-surface | LPM Firewall

registry / @polymorphism-tech/morph-spec / 8.46.0

@polymorphism-tech/morph-spec@8.46.0

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

AI Security Review

scanned 5d ago · by lpm-firewall-ai

LPM flags this version as an AI-agent control-surface risk. Automatic installation modifies global Claude Code configuration without consent. It installs package scripts and registers their execution across Claude sessions.

Static reason

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

Trigger

npm installation with lifecycle scripts enabled.

Impact

The package replaces the global statusLine setting and causes package code to run in Claude sessions outside the installing project.

Mechanism

The postinstall script invokes an installer that copies statusline scripts into ~/.claude and merges a command into ~/.claude/settings.json.

Policy narrative

Installing the package automatically invokes its global statusline installer. Without asking for consent, the installer copies executable scripts into the user's Claude directory and registers a command in global Claude settings. This establishes package execution across unrelated Claude sessions and can replace an existing statusline command.

AI rationale

Source proves unconsented postinstall mutation of a broad, foreign AI-agent control surface. This meets the blocking policy even though the command provides a status display and no exfiltration was established.

Evidence

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

Decision evidence

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

42recap = readFileSync(recapPath, 'utf-8'); L43: tasksJson = JSON.parse(readFileSync(tasksJsonPath, 'utf-8')); L44: } catch { ... L130: // Prevent infinite loop L131: if (process.env.MORPH_STOP_HOOK_ACTIVE === '1') return null; L132: ... L140: const { name, feature } = active; L141: const cwd = process.cwd(); L142: const warnings = [];

Low

Weak Crypto

Package source references weak cryptographic algorithms.

framework/hooks/claude-code/core/validate-completion.jsView on unpkg · L42

src/utils/hooks-installer.jsView file

14import { homedir } from 'os'; L15: import { execSync } from 'child_process'; L16: import { realEffects } from '../lib/installers/effects.js'; ... L188: // (measured: all three fire it). The hook prints the created path as its L189: // last stdout line; a non-zero exit fails the creation. No matcher exists L190: // for this event. 120s: it spawns the morph-spec CLI (setup or provision), ... L358: try { L359: settings = JSON.parse(await readFile(settingsPath, 'utf-8')); L360: } catch { ... L449: // JSON Schema for IDE auto-complete and validation L450: settings['$schema'] = 'https://json.schemastore.org/claude-code-settings.json'; L451:

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 = token_shingles matchedPackage = @polymorphism-tech/morph-spec@8.44.0 matchedPath = src/utils/hooks-installer.js matchedIdentity = npm:[redacted]:8.44.0 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

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 = 28396 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 = 10

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@8.44.0 matchedPath = src/lib/installers/mcp-installer.js matchedIdentity = npm:[redacted]:8.44.0 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/claude-code/core/worktree-context.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.44.0 matchedPath = framework/hooks/claude-code/core/worktree-context.js matchedIdentity = npm:[redacted]:8.44.0 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/worktree-context.jsView on unpkg

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

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.44.0 matchedPath = framework/hooks/shared/agent-reap.js matchedIdentity = npm:[redacted]:8.44.0 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@8.44.0 matchedPath = framework/hooks/shared/graph-refresh.js matchedIdentity = npm:[redacted]:8.44.0 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@8.44.0 matchedPath = [redacted].js matchedIdentity = npm:[redacted]:8.44.0 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@8.44.0 matchedPath = src/commands/project/doctor.js matchedIdentity = npm:[redacted]:8.44.0 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@8.44.0 matchedPath = src/commands/project/init.js matchedIdentity = npm:[redacted]:8.44.0 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@8.44.0 matchedPath = src/lib/procs/list.js matchedIdentity = npm:[redacted]:8.44.0 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/templates/project/validate.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.44.0 matchedPath = [redacted].js matchedIdentity = npm:[redacted]:8.44.0 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/templates/project/validate.jsView on unpkg

src/commands/e2e/e2e.jsView file

•matchType = normalized_sha256 matchedPackage = @polymorphism-tech/morph-spec@8.44.0 matchedPath = src/commands/e2e/e2e.js matchedIdentity = npm:[redacted]:8.44.0 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@8.44.0 matchedPath = src/commands/mcp/mcp-setup.js matchedIdentity = npm:[redacted]:8.44.0 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