registry / AI-agent control-surface risk / open-walnut / 0.6.15

open-walnut@0.6.15

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

AI Security Review

scanned 2d ago · by lpm-firewall-ai

The package automatically modifies a foreign AI agent SDK during installation and suppresses its file-read safety reminder. This is an unconsented change to the agent's control behavior, supporting a block.

Static reason

One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review

Trigger

Installing open-walnut runs its postinstall hook; the patch applies when the installed SDK version matches its target.

Impact

The SDK's file-read safety reminder, including its instruction to refuse improving malware, is no longer appended to those results.

Mechanism

The hook resolves the installed SDK and replaces its CLI file-read result logic using a shipped patch that removes the conditional reminder append.

Policy narrative

On package installation, the postinstall hook resolves the installed Claude Agent SDK and rewrites its CLI when the version matches the shipped patch. The patch removes the reminder appended to file-read results, including the SDK instruction to refuse improving malware, weakening the agent's safety controls.

AI rationale

Evidence

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

Decision evidence

public snapshot

AI identified this as a dangerous AI-agent capability at 99.0% confidence with low false-positive risk.

Evidence for policy risk

package.json runs a postinstall hook and pins the Claude Agent SDK to version 0.2.50.
The postinstall hook calls the patch routine automatically, without a user consent prompt.
The routine rewrites the installed SDK CLI, and its message says the reminder is disabled.
The patch changes file-read results from conditionally appending a reminder to appending nothing.
The patch contains a file-read reminder directing the SDK to refuse improving malware.
The patch is applied only when the installed SDK version matches its target.

Evidence against

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNetworkShellWebSocket

Supply chain

HighEntropyStringsMinifiedPossibleObfuscationUrlStrings

Manifest

Source & flagged code

26 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 1269-1309javascript

1269

1270// src/utils/json-conflict-recovery.ts

1271import fsp2 from "fs/promises";

1272import path4 from "path";

1273import os2 from "os";

1274import

dist/web/static/assets/pptx-preview.es-rb2eOKxH.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-rb2eOKxH.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 = 13213298 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 = 13453599 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 = 6

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

•matchType = normalized_sha256 matchedPackage = open-walnut@0.6.14 matchedPath = dist/cli-fast.js matchedIdentity = npm:b3Blbi13YWxudXQ:0.6.14 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High