registry / AI-agent capability abuse / skykoi / 2026.3.531

skykoi@2026.3.531

SkyKoi — Koi runtime. Multi-channel gateway CLI with RPC Koi.

AI Security Review

scanned 3mo ago · by lpm-firewall-ai

The scanner's claimed remote eval is unsupported: the only inspected eval is bundled protobufjs require indirection. The package nevertheless provides high-impact runtime capabilities, including optional execution of an unpinned remote binary, so it warrants a warning rather than a block.

Static reason

High-risk behavior combination matched malicious policy.; previous stored version diff introduced dangerous source

Trigger

User runs the gateway and enables/uses its remote tunnel or authenticated RPC.

Impact

Authenticated or compromised gateway clients could access allowed files; an unpinned upstream cloudflared release could execute locally.

Mechanism

authenticated gateway file access plus optional remote binary download/execution

AI rationale

Evidence

package.jsonskykoi.mjsdist/gateway-cli-De1jRuYi.jsdist/login-qr-VRGxkuQ4.js/tmp//home//home/ubuntu/koi/

Network endpoints1

github.com/cloudflare/cloudflared/releases/latest/download

Decision evidence

public snapshot

AI called this Suspicious at 86.0% confidence as Dangerous Capability with low false-positive risk.

Evidence for warning

Runtime gateway exposes base64 file reads for /home and /tmp.
Gateway can download and execute cloudflared; default release is latest.
File RPC is protected by gateway authentication/device checks.

Evidence against

package.json has no preinstall/install/postinstall hooks.
skykoi.mjs only enables compile cache then imports dist entry.
The flagged eval is bundled protobufjs optional-module loading, not remote-response execution.
Cloudflared download is a user-invoked gateway/tunnel feature and verifies SHA-256 when configured.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNativeBindingsNetworkShellWebSocket

Supply chain

HighEntropyStringsMinifiedObfuscatedTelemetryUrlStrings

Source & flagged code

19 flagged

dist/esm-EiZfw_GY.jsView file

5594patternName = generic_password severity = medium line = 5594 matchedText = password...d]",

Medium

Secret Pattern

Package contains a possible secret pattern.

dist/esm-EiZfw_GY.jsView on unpkg · L5594

dist/dist-H7dfVGXo.jsView file

33370const executable_response_1 = require_executable_response(); L33371: const childProcess = __require("child_process"); L33372: const fs$2 = __require("fs");

High

Child Process

Package source references child process execution.

dist/dist-H7dfVGXo.jsView on unpkg · L33370

82} L83: const gacPath = process.env.GOOGLE_APPLICATION_CREDENTIALS; L84: if (gacPath) [redacted] = _existsSync(gacPath); L85: else [redacted] = _existsSync(_join(_homedir(), ".config", "gcloud", "application_default_credentials.json")); L86: } ... L129: provider: "amazon-bedrock", L130: baseUrl: "https://bedrock-runtime.us-east-1.amazonaws.com", L131: reasoning: false, ... L12537: //#region node_modules/.pnpm/@anthropic-ai+sdk@0.73.0_zod@4.3.6/node_modules/@anthropic-ai/sdk/internal/tslib.mjs L12538: function __classPrivateFieldSet$1(receiver, state, value, kind, f) { L12539: if (kind === "m") throw new TypeError("Private method is not writable"); ... L12677: try {

High

Cloud Metadata Access

Source reaches cloud instance metadata or link-local credential endpoints.

dist/dist-H7dfVGXo.jsView on unpkg · L82

82Cross-file remote execution chain: dist/dist-H7dfVGXo.js spawns dist/dist-cjs-CI2XHT4i.js; helper contains network access plus dynamic code execution. L82: } L83: const gacPath = process.env.GOOGLE_APPLICATION_CREDENTIALS; L84: if (gacPath) [redacted] = _existsSync(gacPath); L85: else [redacted] = _existsSync(_join(_homedir(), ".config", "gcloud", "application_default_credentials.json")); L86: } ... L129: provider: "amazon-bedrock", L130: baseUrl: "https://bedrock-runtime.us-east-1.amazonaws.com", L131: reasoning: false, ... L12537: //#region node_modules/.pnpm/@anthropic-ai+sdk@0.73.0_zod@4.3.6/node_modules/@anthropic-ai/sdk/internal/tslib.mjs L12538: function __classPrivateFieldSet$1(receiver, state, value, kind, f) { L12539: if (kind === "m") throw new TypeError("Private method is not w

High

Cross File Remote Execution Context

Source spawns a local helper that also contains network and dynamic execution context; review data flow before blocking.

dist/dist-H7dfVGXo.jsView on unpkg · L82

•stage = ast_semantic_analysis; reason = ast_alias_growth_limit_exceeded; limitedFiles = 1

High

Semantic Analysis Limited

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

dist/dist-H7dfVGXo.jsView on unpkg

dist/runner-Bpn6wwaq.jsView file

10import { n as GatewayClient } from "./client-Dk3-ksy6.js"; L11: import { i as readExecApprovalsSnapshot, o as resolveExecApprovalsSocketPath, r as normalizeExecApprovals, s as saveExecApprovals, t as ensureExecApprovals } from "./exec-approvals... L12: import { c as analyzeArgvCommand, l as resolveSafeBins, n as evaluateExecAllowlist, o as recordAllowlistUse, r as evaluateShellAllowlist, s as requiresExecApproval, t as addAllowli...

High

Shell

Package source references shell execution.

dist/runner-Bpn6wwaq.jsView on unpkg · L10

dist/gateway-cli-De1jRuYi.jsView file

71import { a as resolveOutboundTarget, o as resolveSessionDeliveryTarget, u as normalizePollInput } from "./message-B9ixSTcC.js"; L72: import { i as [redacted], s as verifyDeviceSignature, t as deriveDeviceIdFromPublicKey } from "./device-identity-Cec6PTp_.js"; L73: import { n as pickPrimaryTailnetIPv6, t as pickPrimaryTailnetIPv4 } from "./tailnet-Dg95PC4H.js"; L74: import { $ as validateNodePairListParams, A as [redacted], At as ErrorCodes, B as validateKoiIdentityParams, C as validateCronUpdateParams, Ct as validateWeb... L75: import { n as callGateway, s as loadGatewayTlsRuntime$1 } from "./call-Bh81D_gl.js"; ... L106: import { c as flushGraphEventOutbox, t as flushGraphPreviewOutbox } from "./graph-preview-outbox-BTgyoHrn.js"; L107: import { _ as setAudioMuted, m as isPrivateMode,

Critical

Command Output Exfiltration

Source executes local commands and sends command output to an external endpoint.

dist/gateway-cli-De1jRuYi.jsView on unpkg · L71

Critical

Remote Asset Decode Execute

Source fetches a remote non-code asset, decodes its contents, and dynamically executes the decoded payload.

dist/gateway-cli-De1jRuYi.js

dist/tui-D5kWoSxi.jsView file

39import os, { homedir, tmpdir } from "node:os"; L40: import { execFile, spawn } from "node:child_process"; L41: import { randomUUID } from "node:crypto"; ... L61: try { L62: if (process.platform === "win32") { L63: const line = `timeout /t 3 /nobreak >nul & (npm rm -g ${pkg} || pnpm rm -g ${pkg} || bun rm -g ${pkg})`; L64: spawn(process.env.ComSpec || "cmd.exe", [ L65: "/d", ... L114: function terminalColumns() { L115: const cols = process.stdout?.columns; L116: if (typeof cols === "number" && Number.isFinite(cols) && cols > 0) return Math.floor(cols); ... L232: const stack = err instanceof Error ? err.stack ?? err.message : String(err);

High

Sandbox Evasion Gated Capability

Source gates dangerous network, credential, or execution behavior behind CI, host, platform, time, or geo fingerprint checks.

dist/tui-D5kWoSxi.jsView on unpkg · L39

High

Obfuscated Payload Loader

Source contains an obfuscated payload loader that reconstructs and executes hidden code.

dist/tui-D5kWoSxi.jsView on unpkg · L39

dist/login-qr-VRGxkuQ4.jsView file

•Remote response is passed to a worker and executed with Node capabilities. dist/login-qr-VRGxkuQ4.js: import { i as __require, o as __toESM, r as __exportAll, t as __commonJSMin } from "./chunk-D_gEzPfs.js"; var require_eventemitter3 = /* @__PURE__ */ __commonJSMin(((exports, module) => { var require_aspromise = /* @__PURE__ */ __commonJSMin(((exports, module) => { var require_base64 = /* @__PURE__ */ __commonJSMin(((exports) => { var require_eventemitter = /* @__PURE__ */ __commonJSMin(((exports, module) => { var require_float = /* @__PURE__ */ __commonJSMin(((exports, module) => { var require_inquire$1 = /* @__PURE__ */ __commonJSMin(((exports, module) => { * Requires a module only if available. dist/reply-NfrJmAQ4.js: import { i as __require, o as __toESM, r as __exportAll, t as __commo

Critical

Remote Response Code Execution

Source passes code obtained from a remote response into a dynamic execution sink.

dist/login-qr-VRGxkuQ4.jsView on unpkg

•matchType = previous_version_dangerous_delta matchedPackage = skykoi@2026.3.529 matchedIdentity = npm:c2t5a29p:2026.3.529 similarity = 0.950 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/login-qr-VRGxkuQ4.jsView on unpkg

dist/completion-cli-6Rwy_ceZ.jsView file

21Trigger-reachable persistence chain: manifest.main -> dist/index.js -> dist/completion-cli-6Rwy_ceZ.js L21: "bash", L22: "powershell", L23: "fish" ... L27: } L28: function resolveShellFromEnv(env = process.env) { L29: const shellPath = env.SHELL?.trim() ?? ""; ... L42: function resolveCompletionCacheDir(env = process.env) { L43: const stateDir = resolveStateDir(env, os.homedir); L44: return path.join(stateDir, "completions"); ... L121: const home = process.env.HOME || os.homedir(); L122: if (shell === "zsh") return path.join(home, ".zshrc"); L123: if (shell === "bash") return path.join(home, ".bashrc");

High

Trigger Reachable Persistence

A manifest entrypoint or package-local install chain reaches persistence behavior.

dist/completion-cli-6Rwy_ceZ.jsView on unpkg · L21

scripts/needle-sidecar.pyView file

•path = scripts/needle-sidecar.py kind = build_helper sizeBytes = 3524 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

scripts/needle-sidecar.pyView on unpkg

dist/plugin-sdk/index.jsView file

•path = dist/plugin-sdk/index.js kind = oversized_source_file sizeBytes = 8523138 magicHex = [redacted]

Medium

Oversized Source File

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

dist/plugin-sdk/index.jsView on unpkg

Source & flagged code

19 flagged · loading source

dist/esm-EiZfw_GY.jsView file

5594patternName = generic_password severity = medium line = 5594 matchedText = password...d]",

Medium

Secret Pattern

Package contains a possible secret pattern.

dist/esm-EiZfw_GY.jsView on unpkg · L5594

dist/dist-H7dfVGXo.jsView file

33370const executable_response_1 = require_executable_response(); L33371: const childProcess = __require("child_process"); L33372: const fs$2 = __require("fs");

High

Child Process

Package source references child process execution.

dist/dist-H7dfVGXo.jsView on unpkg · L33370

Findings

4 Critical10 High9 Medium6 Low

CriticalCommand Output Exfiltrationdist/gateway-cli-De1jRuYi.js

CriticalRemote Asset Decode Executedist/gateway-cli-De1jRuYi.js

CriticalRemote Response Code Executiondist/login-qr-VRGxkuQ4.js

CriticalPrevious Version Dangerous Deltadist/login-qr-VRGxkuQ4.js

HighChild Processdist/dist-H7dfVGXo.js

HighShelldist/runner-Bpn6wwaq.js

HighEval

HighSandbox Evasion Gated Capabilitydist/tui-D5kWoSxi.js

HighCloud Metadata Accessdist/dist-H7dfVGXo.js

HighObfuscated Payload Loaderdist/tui-D5kWoSxi.js

HighCross File Remote Execution Contextdist/dist-H7dfVGXo.js

High

Affected versions and remediation

This report applies to skykoi@2026.3.531.

See all versions of skykoi for other recorded verdicts.

Review the evidence and your use of skykoi@2026.3.531 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: 2026-08-07 21:26:43.148Z (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

Runtime surface

Behavioral surface

Source & flagged code