registry / AI-agent control-surface risk / open-walnut / 0.6.10

open-walnut@0.6.10

Personal AI powered by Claude — task management, Claude Code sessions, memory system, and web UI

AI Security Review

scanned 10d ago · by lpm-firewall-ai

The automatic postinstall weakens the control context of a foreign AI agent by removing its reminder from the SDK CLI. This is a concrete AI-agent control hijack, so the package should be blocked.

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

Installing open-walnut through npm when the matching SDK version is present.

Impact

The SDK's agent receives less safety context when processing file-reading results.

Mechanism

The hook applies a shipped patch to the SDK CLI and removes its conditional reminder append.

Policy narrative

During npm installation, the package locates the installed Claude Agent SDK and applies a version-matched patch to its CLI. The patch removes a conditional reminder append from file-reading results, and the hook logs that the reminder was disabled. No user consent check gates this mutation.

AI rationale

The automatic postinstall weakens the control context of a foreign AI agent by removing its reminder from the SDK CLI. This is a concrete AI-agent control hijack, so the package should be blocked.

Evidence

package.jsonscripts/postinstall.mjspatches/@anthropic-ai+claude-agent-sdk+0.2.50.patch@anthropic-ai/claude-agent-sdk/cli.js

Decision evidence

public snapshot

AI identified this as a dangerous AI-agent capability at 97.0% confidence with low false-positive risk.

Evidence for policy risk

The package runs scripts/postinstall.mjs automatically during npm installation.
The postinstall resolves the installed Claude Agent SDK and replaces a matching line in its CLI bundle without prompting for consent.
The shipped patch removes the SDK's conditional reminder append; the postinstall reports that the reminder was disabled.

Evidence against

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNetworkShellWebSocket

Supply chain

HighEntropyStringsMinifiedPossibleObfuscationUrlStrings

ManifestNo manifest risk signals triggered.

scanned 150 file(s), 6.64 MB of source, external domains: 127.0.0.1, docs.oasis-open.org, github.com, graph.microsoft.com, help.yahoo.com, json-schema.org, login.microsoftonline.com, myaccount.google.com, npms.io, openoffice.org, purl.oclc.org, purl.org, raw.githubusercontent.com, react.dev, schemas.microsoft.com, schemas.openxmlformats.org, sheetjs.com, sheetjs.openxmlformats.org, stuk.github.io, support.apple.com, support.microsoft.com, to-do.microsoft.com, tracker.example.com, walnut.invalid, www.apple.com, www.fastmail.help, www.w3.org

Source & flagged code

18 flagged

package.jsonView file

Lines 44-84json

44 "esbuild": true,

45 "onnxruntime-node": true,

46 "protobufjs": true,

47 "screencapturekit-audio-capture": true,

48 "sharp": true

49 },

50 "files": [

51 "bin",

52 "dist",

53 "!dist/daemon-binaries/daemon-linux-*",

54 "!dist/daemon-binaries/daemon-darwin-*",

55 "dist/daemon-binaries/dtach-*",

56 "!dist/**/*.map",

57 "!dist/**/*.gz",

58 "patches",

59 "scripts/postinstall.mjs",

60 "README.md",

61 "LICENSE"

62 ],

63 "scripts": {

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

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg · L64

Medium

Ambiguous Install Lifecycle Script

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

package.jsonView on unpkg · L64

65 "prepublishOnly": "WALNUT_REQUIRE_BUN=1 npm run build && cd web && npx vite build && cd .. && node scripts/check-publish.mjs",

66 "prestart": "node scripts/check-node.mjs && node scripts/check-native-toolchain.mjs",

67 "start": "npm run web:build && node dist/cli.js web --port 3456",

68 "build:plugins": "npm run build -w @open-walnut/plugin-api && npm run build -w @open-walnut/plugin-cli",

69 "build": "npm run build:plugins && bash scripts/build-daemon.sh && tsup && rm -rf dist/data && cp -r src/data dist/ && for d in src/integrations/*/manifest.json; do t=\"dist/integrations/$(basename $(dirname $d))\"; mkdir -p \"$t\"; cp \"$d\" \"$t/\"; i=\"$(dirname $d)/icon.svg\"; rm -f \"$t/icon.svg\"; if [ -f \"$i\" ]; then cp \"

70 "docs:check": "node scripts/generate-ops-docs.mjs --check --repo-only && node scripts/check-plugin-doc-snippets.mjs",

71 "test:plugin-packages": "npm run build:plugins && vitest run --config vitest.focus.config.ts tests/core/plugin-package-metadata.test.ts tests/core/plugin-cli-dev.test.ts tests/core/plugin-cli-scaffold.test.ts tests/core/plugin-publish-check.test.ts && node scripts/check-plugin-packages.mjs",

72 "dev": "tsup --watch",

73 "release": "node scripts/release.mjs",

74 "test": "node scripts/test-parallel.mjs",

75 "test:quick": "npm run docs:check && vitest run --config vitest.quick.config.ts",

76 "search:eval": "tsx scripts/search-eval.mjs",

77 "search:robustness": "tsx scripts/search-robustness-eval.mjs",

78 "test:slow": "vitest run --config vitest.slow.config.ts",

79 "test:focus": "vitest run --config vitest.focus.config.ts",

80 "test:frontend:ci": "node scripts/test-frontend.mjs",

81 "test:changed": "node scripts/test-changed.mjs",

82 "test:baseline": "node scripts/test-baseline.mjs check",

83 "test:baseline:record": "node scripts/test-baseline.mjs record",

84 "test:pre-commit": "npm run docs:check && node scripts/test-changed.mjs --tiers",

dist/plugin-store/walnut-rhythm/dist/server.mjsView file

Lines 1-28javascript

1import{createRequire as __cr}from"node:module";const require=__cr(import.meta.url);

3// plugin-store/walnut-rhythm/src/server.ts

4import fsp3 from "node:fs/promises"

dist/workers/git-compaction-worker.jsView file

Lines 1236-1276javascript

1236

1237// src/utils/json-conflict-recovery.ts

1238import fsp2 from "fs/promises";

1239import path4 from "path";

1240import os2 from "os";

1241import

dist/web/static/assets/pptx-preview.es-8v_AE0RE.jsView file

77`+x.message)}var a=new Lt;a.add(n),a.isGeoSVGGraphicRoot=!0;var i=t.width,o=t.height,s=t.viewBoxRect,l=this._boundingRect;if(!l){var u=void 0,c=void 0,h=void 0,v=void 0;if(i!=null?... L78: `+i.message)}return ij(t,a),R(a,function(i){var o=i.name;sj(t,i),uj(t,i);var s=this._specialAreas&&this._specialAreas[o];s&&i.transformTo(s.left,s.top,s.width,s.height)},this),a},r... L79: `))}),e.join(`

Low

Eval

Package source references a known benign dynamic code generation pattern.

dist/web/static/assets/pptx-preview.es-8v_AE0RE.jsView on unpkg · L77

bin/open-walnut.jsView file

Lines 43-68javascript

43 || (!sub && (args.includes('--version') || args.includes('-V'))));

44// The import is the whole program, so its failure must be LOUD. Unhandled, a

45// bundle that is momentarily empty (dist rewritten by a concurrent build) made

46// the CLI exit 0 having printed nothing at all — a caller in a loop reads that as

47// "the command answered, with nothing", which is the worst possible answer.

dist/daemon-binaries/daemon-service-cli.cjsView file

Lines 1-21javascript

1var ei=Object.create;var{getPrototypeOf:ti,defineProperty:Be,getOwnPropertyNames:cr,getOwnPropertyDescriptor:ri}=Object,Dt=Object.prototype.hasOwnProperty;function lr(e){

dist/daemon-binaries/dtach-linux-x64View file

•path = dist/daemon-binaries/dtach-linux-x64 kind = native_binary sizeBytes = 731144 magicHex = [redacted]

Medium

Ships Native Binary

Package ships native binary artifacts.

dist/daemon-binaries/dtach-linux-x64View on unpkg

dist/data/skills/walnut-register-repo/scripts/validate-repo.pyView file

•path = dist/data/skills/walnut-register-repo/scripts/validate-repo.py kind = build_helper sizeBytes = 5994 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

dist/data/skills/walnut-register-repo/scripts/validate-repo.pyView on unpkg

dist/web/server.jsView file

•path = dist/web/server.js kind = oversized_source_file sizeBytes = 12211757 magicHex = [redacted]

Medium

Oversized Source File

Package contains source files above the normal full-analysis size ceiling.

dist/web/server.jsView on unpkg

dist/cli.jsView file

•path = dist/cli.js kind = oversized_cli_entrypoint sizeBytes = 12461265 magicHex = [redacted]

Medium

Oversized Cli Entrypoint

Package contains an oversized executable-looking CLI entrypoint.

dist/cli.jsView on unpkg

dist/cli-fast.jsView file

•stage = ast_semantic_analysis; reason = ast_alias_growth_limit_exceeded; limitedFiles = 7

High

Semantic Analysis Limited

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

dist/cli-fast.jsView on unpkg

dist/daemon-binaries/pi-acp.jsView file

•matchType = normalized_sha256 matchedPackage = open-walnut@0.5.0 matchedPath = dist/daemon-binaries/pi-acp.js matchedIdentity = npm:b3Blbi13YWxudXQ:0.5.0 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.

dist/daemon-binaries/pi-acp.jsView on unpkg

dist/web/static/assets/sql-D0XecflT.jsView file

•matchType = normalized_sha256 matchedPackage = open-walnut@0.5.0 matchedPath = dist/web/static/assets/sql-D0XecflT.js matchedIdentity = npm:b3Blbi13YWxudXQ:0.5.0 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.

dist/web/static/assets/sql-D0XecflT.jsView on unpkg

dist/web/static/assets/vbscript-BuJXcnF6.jsView file

•matchType = normalized_sha256 matchedPackage = open-walnut@0.5.0 matchedPath = dist/web/static/assets/vbscript-BuJXcnF6.js matchedIdentity = npm:b3Blbi13YWxudXQ:0.5.0 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.

dist/web/static/assets/vbscript-BuJXcnF6.jsView on unpkg

dist/daemon-binaries/acp-daemon-core.cjsView file

•matchType = previous_version_dangerous_delta matchedPackage = open-walnut@0.6.9 matchedIdentity = npm:b3Blbi13YWxudXQ:0.6.9 similarity = 0.983 summary = stored previous version shares package body but lacks this dangerous source file

Critical

Previous Version Dangerous Delta

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

dist/daemon-binaries/acp-daemon-core.cjsView on unpkg

Source & flagged code

18 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

dist/plugin-store/walnut-rhythm/dist/server.mjsView file

8// plugin-store/walnut-rhythm/src/server/exec.ts L9: import { execFile } from "node:child_process"; L10: var MAX_BUFFER = 1024 * 1024;

High

Child Process

Package source references child process execution.

dist/plugin-store/walnut-rhythm/dist/server.mjsView on unpkg · L8

Findings

1 Critical9 High9 Medium7 Low

CriticalPrevious Version Dangerous Deltadist/daemon-binaries/acp-daemon-core.cjs

HighInstall Time Lifecycle Scriptspackage.json

HighChild Processdist/plugin-store/walnut-rhythm/dist/server.mjs

HighShelldist/workers/git-compaction-worker.js

HighSame File Env Network Executiondist/daemon-binaries/daemon-service-cli.cjs

HighCommand Output Exfiltrationdist/daemon-binaries/daemon-service-cli.cjs

HighSemantic Analysis Limiteddist/cli-fast.js

HighKnown Malware Source Similaritydist/daemon-binaries/pi-acp.js

HighKnown Malware Source Similaritydist/web/static/assets/sql-D0XecflT.js

HighKnown Malware Source Similaritydist/web/static/assets/vbscript-BuJXcnF6.js

Affected versions and remediation

This report applies to open-walnut@0.6.10.

See all versions of open-walnut for other recorded verdicts.

Avoid installing open-walnut@0.6.10. 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: 2026-10-13 01:08:42.611Z (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

Related packages

Other AI-agent control-surface risk packages

Runtime surface

Behavioral surface

Related packages

Other AI-agent control-surface risk packages

Source & flagged code