runcastle@1.3.3
Burn tickets into shipped features with Claude Code.
AI Security Review
scanned 5d ago · by lpm-firewall-aiThe startup update check sends limited telemetry to the package's own endpoint by default, with DO_NOT_TRACK as an opt-out. This is a warning-level privacy concern; the reviewed code does not establish credential redirection or broader data theft.
Static reason
One or more suspicious static signals were detected.; previous stored version diff introduced dangerous source
Trigger
Automatic package startup.
Impact
The vendor can associate package usage across launches; no credential or project-data collection was identified in this request.
Mechanism
The startup path calls the update checker, which posts install ID, version, and platform to the package's ping endpoint unless DO_NOT_TRACK is set.
AI rationale
The startup update check sends limited telemetry to the package's own endpoint by default, with DO_NOT_TRACK as an opt-out. This is a warning-level privacy concern; the reviewed code does not establish credential redirection or broader data theft.
Evidence
index.js
Network endpoints1
ping.runcastle.dev/ping
Decision evidence
public snapshotAI called this Suspicious at 85.0% confidence as Unknown with medium false-positive risk.
Evidence for warning
- On startup, the package checks for updates without waiting for a user request.
- Unless DO_NOT_TRACK is set, the update check posts an install ID, package version, and platform to ping.runcastle.dev.
- The request contains limited telemetry fields; the source does not show credentials or project data in this payload.
Evidence against
- The manifest describes a Claude Code feature tool and exposes its CLI through bin/runcastle.js.
- The credential-related code describes user-configured Claude and Codex credentials; the reviewed excerpts do not show them being redirected.
- The telemetry has a DO_NOT_TRACK opt-out and sends only an install ID, version, and platform.
Behavioral surface
ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetworkShellWebSocket
HighEntropyStringsMinifiedPossibleObfuscation
Source & flagged code
8 flaggedbin/runcastle.jsView file
•matchType = previous_version_dangerous_delta
matchedPackage = runcastle@1.2.11
matchedIdentity = npm:cnVuY2FzdGxl:1.2.11
similarity = 0.600
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.
bin/runcastle.jsView on unpkg1205// src/pty/kill-tree.ts
L1206: import { spawn } from "child_process";
L1207: function taskkillTree(pid) {
High
Child Process
Package source references child process execution.
bin/runcastle.jsView on unpkg · L12051137if (/\.(cmd|bat)$/i.test(resolved)) {
L1138: return { file: process.env.ComSpec ?? "cmd.exe", args: ["/c", resolved, ...args] };
L1139: }
High
Findings
1 Critical5 High4 Medium4 Low
CriticalPrevious Version Dangerous Deltabin/runcastle.js
HighChild Processbin/runcastle.js
HighShellbin/runcastle.js
HighSame File Env Network Executionbin/runcastle.js
HighCredential Redirect Persistenceindex.js
HighCross File Remote Execution Contextbin/runcastle.js
MediumDynamic Requirepty-host.cjs
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowWeak Cryptobin/runcastle.js
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to runcastle@1.3.3.
See all versions of runcastle for other recorded verdicts.
- Review the evidence and your use of runcastle@1.3.3 before allowing it. Restrict the permissions described in this report.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
Evidence last updated: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.