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audit-tools@0.51.7: Malicious npm security report (Block) | LPM Firewall

registry / audit-tools / 0.51.7

audit-tools@0.51.7

Provider-neutral code auditing and remediation workflows for arbitrary repositories.

AI Security Review

scanned 1mo ago · by lpm-firewall-ai

Installing the package automatically mutates global Claude, Codex, OpenCode, and Gemini/Antigravity agent surfaces. It also alters the consuming repository's .gitignore.

Static reason

One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; previous stored version diff introduced dangerous source

Trigger

npm postinstall during package installation

Impact

An install can add or overwrite AI-agent control files outside the package without an explicit setup command.

Mechanism

Automatic deployment of global agent commands, skills, plugins, and configuration

Attack narrative

The postinstall hook launches two deployers that write global Claude and Codex skills, merge OpenCode configuration, and install Gemini/Antigravity plugins. The shared writer creates directories and overwrites targets. This occurs automatically on installation and is accompanied by a consumer-project .gitignore mutation, creating an unconsented broad AI-agent control-surface change.

AI rationale

This is concrete automatic install-time mutation of foreign, global AI-agent control surfaces and the consuming project. The lack of observed network exfiltration does not remove that install-hook abuse.

Evidence

package.jsonscripts/postinstall.mjsscripts/audit/postinstall.mjsscripts/remediate/postinstall.mjsscripts/shared/install-host-assets.mjs$HOME/.claude/commands/audit-code.md$HOME/.codex/skills/audit-code/SKILL.md$HOME/.codex/skills/remediate-code/SKILL.md

Source & flagged code

9 flagged · loading source

package.jsonView file

•scripts.postinstall = node scripts/postinstall.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

•scripts.postinstall = node scripts/postinstall.mjs

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg

wrapper/audit-code-wrapper-lib.mjsView file

•matchType = normalized_sha256 matchedPackage = audit-tools@0.51.3 matchedPath = wrapper/audit-code-wrapper-lib.mjs matchedIdentity = npm:YXVkaXQtdG9vbHM:0.51.3 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.

wrapper/audit-code-wrapper-lib.mjsView on unpkg

•matchType = previous_version_dangerous_delta matchedPackage = audit-tools@0.50.1 matchedIdentity = npm:YXVkaXQtdG9vbHM:0.50.1 similarity = 0.542 summary = stored previous version shares package body but lacks this dangerous source file

High

Previous Version Dangerous Delta

This package version adds a dangerous source file absent from the previous stored version; route for source-aware review.

wrapper/audit-code-wrapper-lib.mjsView on unpkg

340const distUrl = new URL(`file:///${distCliEntry.replace(/\\/g, '/')}`); L341: const cli = await import(distUrl.href); L342: await cli.runCli([process.execPath, distCliEntry, commandName, ...commandArgs]);

Medium

Dynamic Require

Package source references dynamic require/import behavior.

wrapper/audit-code-wrapper-lib.mjsView on unpkg · L340

dist/audit/cli/args.jsView file

•stage = ast_semantic_analysis; reason = ast_alias_growth_limit_exceeded; limitedFiles = 5

High

Semantic Analysis Limited

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

dist/audit/cli/args.jsView on unpkg

dist/audit/orchestrator/runtimeCommand.jsView file

•matchType = normalized_sha256 matchedPackage = audit-tools@0.51.3 matchedPath = [redacted].js matchedIdentity = npm:YXVkaXQtdG9vbHM:0.51.3 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.

dist/audit/orchestrator/runtimeCommand.jsView on unpkg

dist/shared/tooling/exec.jsView file

•matchType = normalized_sha256 matchedPackage = audit-tools@0.51.3 matchedPath = dist/shared/tooling/exec.js matchedIdentity = npm:YXVkaXQtdG9vbHM:0.51.3 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.

dist/shared/tooling/exec.jsView on unpkg

wrapper/audit-code-wrapper-build.mjsView file

•matchType = normalized_sha256 matchedPackage = audit-tools@0.51.3 matchedPath = wrapper/audit-code-wrapper-build.mjs matchedIdentity = npm:YXVkaXQtdG9vbHM:0.51.3 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.

wrapper/audit-code-wrapper-build.mjsView on unpkg

Source & flagged code

9 flagged

package.jsonView file

Lines 22-62json

22 },

23 "files": [

24 "dist/**",

25 "audit-code.mjs",

26 "wrapper/**",

27 "remediate-code.mjs",

28 "dispatch/**",

29 "schemas/**",

30 "skills/**",

31 "scripts/postinstall.mjs",

32 "scripts/audit/postinstall.mjs",

33 "scripts/remediate/postinstall.mjs",

34 "scripts/shared/install-host-assets.mjs",

35 "opencode.json",

36 "README.md",

37 "docs/audit-pkg/product.md",

38 "docs/audit-pkg/operator-guide.md",

39 "docs/audit-pkg/contracts.md"

40 ],

41 "scripts": {

42 "postinstall": "node scripts/postinstall.mjs",

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L42

Medium

Ambiguous Install Lifecycle Script

Install-time lifecycle script is not statically allowlisted and needs review.

package.jsonView on unpkg · L42

43 "prebuild": "node scripts/shared/guard-no-suite-running.mjs",

44 "build": "node scripts/shared/clean-dist.mjs && tsc -p tsconfig.json",

45 "check": "tsc -p tsconfig.json --noEmit",

46 "check:tests": "tsc -p tsconfig.test.json",

47 "check:scripts": "tsc -p tsconfig.scripts.json",

48 "nightly:inbox": "node scripts/nightly/render-inbox.mjs",

49 "nightly:ingest": "node scripts/nightly/ingest-answers.mjs",

50 "test:doc-contract": "node scripts/shared/run-vitest-gate.mjs tests/audit/release-contract.test.ts tests/audit/host-asset-renderer-drift.test.ts tests/shared/handoff-roadmap.test.ts",

51 "test": "npm run build && node scripts/shared/run-vitest-gate.mjs",

52 "test:single": "npm run build && node scripts/shared/run-vitest-gate.mjs",

53 "verify:guards": "node scripts/shared/run-vitest-gate.mjs --retry=2 --exclude \"**/audit-code-completion-*.test.ts\" --exclude \"**/audit-code-wrapper-*.test.ts\" --exclude \"**/audit/next-step-core-*.test.ts\" --exclude \"**/seam-host-only-next-step.test.ts\" --exclude \"**/*-e2e.test.*\" --exclude \"**/next-step-implement-dispatch.test.ts\" --exclude \"**/next-step-pipeline-dispatch.test.ts\""

54 "verify:checks": "node scripts/shared/profile-run.mjs verify-checks check:control-bytes check:shared-primitives check:version-gates check:guard-reach check:generated-artifacts check:invariant-glossary check:nightly-inbox check:ci-trigger-paths check:loop-core-patterns check:loop-core-closure check:constitutional-doc-paths check:runtime-artifact-names check:friction-categories check:executor-producers check:spec-mirrors check:cli-surface check:ingestion-checks check:deadcode check:orphan-modules check:lint check:dup check:depgraph check:doc-manifest check:doc-links check:doc-code-citations ...

55 "verify:release": "npm run verify:checks && node scripts/shared/run-vitest-gate.mjs && npm run smoke:linked-audit-code && npm run smoke:linked-remediate-code",

56 "check:control-bytes": "node scripts/check-control-bytes.mjs",

57 "check:shared-primitives": "node scripts/check-shared-primitives.mjs",

58 "check:guard-reach": "node scripts/check-guard-reach.mjs",

59 "check:generated-artifacts": "node scripts/check-generated-artifacts.mjs",

60 "check:invariant-glossary": "node scripts/check-invariant-glossary.mjs",

61 "check:nightly-inbox": "node scripts/nightly/render-inbox.mjs --check",

62 "closeout": "node scripts/render-closeout.mjs",

Long lines were clipped for display.

wrapper/audit-code-wrapper-lib.mjsView file

Lines 320-360javascript

320 // Gate the mkdir behind the same ensureArtifactsDir flag as runDistCommand so

321 // "the artifacts directory is created only for designated stateful commands"

322 // holds on this path too (CE-001); mcp is a designated stateful command and

323 // opts in explicitly at its call site.

324 if (ensureArtifactsDir) {

325 await mkdir(artifactsDir, { recursive: true

dist/audit/cli/args.jsView file

•stage = ast_semantic_analysis; reason = ast_alias_growth_limit_exceeded; limitedFiles = 5

High

Semantic Analysis Limited

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

dist/audit/cli/args.jsView on unpkg

dist/audit/orchestrator/runtimeCommand.jsView file

•matchType = normalized_sha256 matchedPackage = audit-tools@0.51.3 matchedPath = [redacted].js matchedIdentity = npm:YXVkaXQtdG9vbHM:0.51.3 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.

dist/audit/orchestrator/runtimeCommand.jsView on unpkg

dist/shared/tooling/exec.jsView file

•matchType = normalized_sha256 matchedPackage = audit-tools@0.51.3 matchedPath = dist/shared/tooling/exec.js matchedIdentity = npm:YXVkaXQtdG9vbHM:0.51.3 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.

dist/shared/tooling/exec.jsView on unpkg

wrapper/audit-code-wrapper-build.mjsView file

•matchType = normalized_sha256 matchedPackage = audit-tools@0.51.3 matchedPath = wrapper/audit-code-wrapper-build.mjs matchedIdentity = npm:YXVkaXQtdG9vbHM:0.51.3 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.

wrapper/audit-code-wrapper-build.mjsView on unpkg