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flavor-code@1.3.20: Malicious npm security report (Block) | LPM Firewall

registry / flavor-code / 1.3.20

flavor-code@1.3.20

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AI Security Review

scanned 24d ago · by lpm-firewall-ai

The init command seeds a workspace OAuth provider that targets a fixed private HTTP endpoint. Later runtime authentication opens that endpoint and submits the resulting authorization code and verifier to it.

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

A user runs flavor init and subsequently starts the configured client without a cached token.

Impact

A host controlling that address can receive OAuth authorization material and issue or capture session tokens.

Mechanism

Seeded OAuth credential capture through a fixed HTTP endpoint.

Attack narrative

The package's explicit initialization writes a project configuration containing a fixed OAuth server at 192.168.1.100 over plain HTTP. On later startup, the configured provider automatically begins PKCE authentication when no cached token exists, opens the authorization URL, and posts the returned code plus verifier to that host. This makes the generated configuration a credential-capture path rather than a neutral example.

AI rationale

The package deliberately seeds an unauthenticated workspace with a fixed private HTTP OAuth authority and automatically uses it later. Although it is not install-time behavior, this is a concrete credential-exposure path.

Evidence

dist/chunk-Z62P4LL7.js.flavor/flavor.json

Network endpoints2

192.168.1.100:8091/authorize192.168.1.100:8091/token

Source & flagged code

17 flagged · loading source

dist/cli-main.jsView file

56// src/update/apply.ts L57: import { spawn } from "child_process"; L58: function npmExecutable(platform = process.platform) {

High

Child Process

Package source references child process execution.

dist/cli-main.jsView on unpkg · L56

dist/desktop/main.jsView file

7402} L7403: if (["powershell", "pwsh"].includes(name)) { L7404: const flag = args.findIndex((arg) => ["-command", "-c"].includes(arg.toLowerCase()));

High

Shell

Package source references shell execution.

dist/desktop/main.jsView on unpkg · L7402

8880function runShellHandler(descriptor, event, signal) { L8881: return new Promise((resolve42, reject) => { L8882: const env = { ...process.env, ...descriptor.env }; L8883: const invocation = prepareSpawnInvocation(descriptor.command, descriptor.args ?? [], { env }); L8884: const child = spawn(invocation.command, invocation.args, { L8885: env,

High

Same File Env Network Execution

A single source file combines environment access, network access, and code or shell execution; review context before blocking.

dist/desktop/main.jsView on unpkg · L8880

•Manifest-reachable source captures an API credential, sends it to a fixed unofficial gateway, and persists that redirection in agent or shell configuration. dist/desktop/main.js: import { readFile as readFile39, stat as stat18, writeFile as writeFile19 } from "fs/promises"; baseURL: z.string().trim().url().max(2048).refine((value) => { baseURL: z2.string().url().optional(), authorizationUrl: z2.string().url().optional(), await handle.writeFile(data2); baseURL: HttpUrlInput, async function runInteractionManifest(manifest, baseUrl, createDriver) { if (!isLoopbackPreviewUrl(baseUrl)) throw new Error("D2C interaction preview must use a loopback HTTP URL");

High

Credential Redirect Persistence

Manifest-reachable source sends a prompted API credential to a fixed unofficial gateway and persists the redirection.

dist/desktop/main.jsView on unpkg

8922if (code !== 0) { L8923: reject(new Error(`Shell hook exited with code ${code}: ${stderr.trim()}`)); L8924: return; ... L8926: try { L8927: resolve42(HookDecisionSchema.parse(JSON.parse(stdout))); L8928: } catch (error) { ... L8931: }); L8932: child.stdin.end(JSON.stringify(event)); L8933: }); ... L8937: if (process.platform === "win32") { L8938: const killer = spawn("taskkill", ["/pid", String(child.pid), "/t", "/f"], { L8939: stdio: "ignore",

High

Command Output Exfiltration

Source combines command execution, command-output handling, and outbound requests; review data flow before blocking.

dist/desktop/main.jsView on unpkg · L8922

8922Trigger-reachable command-output exfiltration chain: manifest.main -> dist/desktop/main.js L8922: if (code !== 0) { L8923: reject(new Error(`Shell hook exited with code ${code}: ${stderr.trim()}`)); L8924: return; ... L8926: try { L8927: resolve42(HookDecisionSchema.parse(JSON.parse(stdout))); L8928: } catch (error) { ... L8931: }); L8932: child.stdin.end(JSON.stringify(event)); L8933: }); ... L8937: if (process.platform === "win32") { L8938: const killer = spawn("taskkill", ["/pid", String(child.pid), "/t", "/f"], { L8939: stdio: "ignore",

High

Trigger Reachable Command Output Exfiltration

A manifest entrypoint or package-local install chain reaches command-output exfiltration behavior.

dist/desktop/main.jsView on unpkg · L8922

4import { readFile as readFile39, stat as stat18, writeFile as writeFile19 } from "fs/promises"; L5: import { basename as basename11, dirname as dirname25, join as join48, resolve as resolve41 } from "path"; L6: import { fileURLToPath as fileURLToPath4 } from "url"; ... L46: try { L47: parsed = JSON.parse(unfenced); L48: } catch { ... L409: } L410: return { ...input, data: data2 }; L411: } ... L1141: const onRenderProcessGone = (_event, details) => { L1142: recordRendererDiagnostic(`renderer process ${details.reason} (exit ${details.exitCode})`); L1143: };

Low

Weak Crypto

Package source references weak cryptographic algorithms.

dist/desktop/main.jsView on unpkg · L4

dist/astgraph/vendor/tree-sitter.jsView file

2977var func = `(${args}) => { ${body} };`; L2978: ASM_CONSTS[start] = eval(func); L2979: }

Low

Eval

Package source references a known benign dynamic code generation pattern.

dist/astgraph/vendor/tree-sitter.jsView on unpkg · L2977

dist/astgraph/index.jsView file

29async function mod(name) { L30: return import(new URL(`./${name}`, import.meta.url).href); L31: }

Medium

Dynamic Require

Package source references dynamic require/import behavior.

dist/astgraph/index.jsView on unpkg · L29

dist/desktop/plugin-worker-entry.jsView file

28const signal = Object.freeze({ aborted: false, reason: undefined, addEventListener() {}, removeEventListener() {}, throwIfAborted() {} }); L29: const cloneJson = (value) => value === undefined ? undefined : JSON.parse(JSON.stringify(value)); L30: const deepFreeze = (value) => {

Medium

Unsafe Vm Context

Package source executes code through a VM context API.

dist/desktop/plugin-worker-entry.jsView on unpkg · L28

dist/cli.jsView file

11Cross-file remote execution chain: dist/cli.js spawns dist/desktop/main.js; helper contains network access plus dynamic code execution. L11: // src/launcher.ts L12: import { spawn } from "child_process"; L13: import { realpathSync, readFileSync } from "fs"; ... L50: try { L51: marker = parseMemoryRestartMarker(readFileSync(memoryRestartMarkerPath(process.cwd()), "utf8")); L52: } catch { ... L56: if (resumed !== void 0) { L57: process.stderr.write(`flavor launcher: heap watermark restart, resuming session ${marker.sessionId} L58: `);

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/cli.jsView on unpkg · L11

•matchType = normalized_sha256 matchedPackage = flavor-code@1.3.17 matchedPath = dist/cli.js matchedIdentity = npm:Zmxhdm9yLWNvZGU:1.3.17 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/cli.jsView on unpkg

dist/astgraph/vendor/tree-sitter.wasmView file

•path = dist/astgraph/vendor/tree-sitter.wasm kind = wasm_module sizeBytes = 205488 magicHex = [redacted]

Medium

Ships Wasm Module

Package ships WebAssembly modules.

dist/astgraph/vendor/tree-sitter.wasmView on unpkg

dist/astgraph/vendor/zod/v4/core/util.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; 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/astgraph/vendor/zod/v4/core/util.js#virtual:normalized:round1View on unpkg

dist/chunk-Z62P4LL7.jsView file

•matchType = previous_version_dangerous_delta matchedPackage = flavor-code@1.4.1 matchedIdentity = npm:Zmxhdm9yLWNvZGU:1.4.1 similarity = 0.478 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/chunk-Z62P4LL7.jsView on unpkg

•matchType = normalized_sha256 matchedPackage = flavor-code@1.3.17 matchedPath = dist/chunk-BKOOYSGH.js matchedIdentity = npm:Zmxhdm9yLWNvZGU:1.3.17 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/chunk-Z62P4LL7.jsView on unpkg

dist/chunk-RQTYHUMK.jsView file

•matchType = normalized_sha256 matchedPackage = flavor-code@1.3.17 matchedPath = dist/chunk-RQTYHUMK.js matchedIdentity = npm:Zmxhdm9yLWNvZGU:1.3.17 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/chunk-RQTYHUMK.jsView on unpkg