registry / AI-agent control-surface risk / @polymorphism-tech/morph-spec
@polymorphism-tech/morph-spec
MORPH-SPEC: NLH (Natural Language Harness) for spec-driven development with Claude Code
This report shows the evidence for @polymorphism-tech/morph-spec@9.0.0. 26 of 37 known versions are blocked or flagged. The newest version, 9.7.0, is flagged. See all versions.
AI Security Review
scanned 18d ago · by lpm-firewall-aiThe 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.
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
Decision evidence
public snapshotAI identified this as a dangerous AI-agent capability at 99.0% confidence with low false-positive risk.
Evidence for policy risk
- package.json automatically runs src/scripts/global-install.js after installation.
- The install script calls installGlobalStatusline without a consent prompt or saved preference gate.
- The installer copies executable statusline scripts into the user's global .claude directory and targets its settings.json.
- The installer registers a command in the global statusLine setting, replacing any existing value.
- The default effects implementation performs real filesystem writes and shallowly overwrites patched settings.
Evidence against
- The registered functionality is a package-provided statusline; the inspected install path does not establish credential theft or remote payload execution.
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetworkShell
HighEntropyStringsUrlStrings
Source & flagged code
20 flagged · loading sourcepackage.jsonView file
•scripts.postinstall = node src/scripts/global-install.js
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkgbin/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 · L23framework/hooks/claude-code/core/validate-completion.jsView file
67
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/templates/code/typescript/contracts.ts
HighKnown Malware Source Similaritysrc/lib/installers/mcp-installer.js
HighKnown Malware Source Similarityframework/hooks/shared/agent-reap.js
HighKnown Malware Source Similarityframework/hooks/shared/graph-refresh.js
HighKnown Malware Source Similaritysrc/commands/dashboard/dashboard.js
HighKnown Malware Source Similaritysrc/lib/procs/list.js
Affected versions and remediation
This report applies to @polymorphism-tech/morph-spec@9.0.0.
The versions list below shows the verdict for each recorded version.
- Avoid installing @polymorphism-tech/morph-spec@9.0.0. Remove it from direct dependencies and check your lockfile for transitive copies.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
- If this version ran, investigate the affected machine and build environment. Rotate credentials it could access and rebuild from a trusted environment.
Evidence last updated: .
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Versions
37 known versions9.7.0latestSuspiciousAgent extension lifecycle riskWarnPublishedOct 20, 2026, 6:30 PM9.6.0SuspiciousAgent extension lifecycle riskWarnPublishedOct 19, 2026, 7:54 PM9.5.0SuspiciousAgent extension lifecycle riskWarnPublishedOct 18, 2026, 10:20 PM9.3.0SuspiciousAgent extension lifecycle riskWarnPublished