flavor-code@1.3.18

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AI Security Review

scanned 2mo ago · by lpm-firewall-ai

Source inspection shows a user-invoked coding agent with package-specific configuration persistence and opt-in reporting, but no automatic lifecycle execution or concrete malicious behavior. The static similarity signal is not substantiated by a source-level attack chain.

Static reason

One or more suspicious static signals were detected.; source matched previously finalized malicious package; routed for review; source fingerprint signature matched known malicious package; routed for review; previous stored version diff introduced dangerous source

Trigger

The user runs the flavor CLI or desktop application and configures a model provider or incident reporting.

Impact

The runtime can retain configured model credentials and send agent requests to user-configured providers; no unconsented exfiltration was established.

Mechanism

User-invoked coding-agent configuration, model requests, and optional local incident reporting.

AI rationale

Evidence

package.jsondist/cli.jsdist/chunk-HJOCNKPN.jsdist/chunk-PF457XCH.js

Decision evidence

public snapshot

AI called this Clean at 88.0% confidence as Benign with low false-positive risk.

Evidence for AI clean decision

When the CLI runs, it can copy configured model credentials into its package-specific configuration file.
Optional incident reporting can include tool input, but it is disabled unless explicitly enabled.

Evidence against

The manifest has no preinstall, install, or postinstall hook.
The executable starts only when its CLI entry point is invoked.
No self-dependency, concealed payload download, credential exfiltration endpoint, or foreign agent-control-surface mutation was found.
The only built-in incident endpoint is localhost and reporting is opt-in.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsEvalFilesystemNetworkShell

Supply chain

HighEntropyStringsMinifiedPossibleObfuscationUrlStrings

Manifest

Source & flagged code

21 flagged

dist/cli-main.jsView file

Lines 636-676javascript

636 this.#pending = void 0;

637 }

638};

639function streamChunks(content, maxChars = 2048) {

640 if (!content) return [];

641 const chunks = [];

642 for (const line of content.match(/[^\n]*\n|[^\n]+$/g) ?? []) {

643 for (let offset = 0; offset < line.length; offset += maxChars) {

644 chunks.push(line.slice(offset, offset + maxChars));

645 }

646 }

647 return chunks;

648}

649

650// src/eval/cli.ts

651import { readFile as readFile2, writeFile as writeFile2 } from "fs/promises";

652import { dirname, resolve as resolve2 } from "path";

653

654// src/execution/local.ts

655var LocalExecutionEnvironment = class {

656 kind = "local";

657 exec(request, signal) {

658 const cancellation = signal ?? new AbortController().signal;

High

Child Process

Package source references child process execution.

dist/cli-main.jsView on unpkg · L656

659 return executeShell(request.cwd, {

660 command: request.command,

661 args: [...request.args],

662 cwd: request.cwd,

663 ...request.timeoutMs === void 0 ? {} : { timeoutMs: request.timeoutMs }

664 }, cancellation, DEFAULT_MAX_OUTPUT_BYTES);

665 }

666 async dispose() {

667 }

668};

669

670// src/eval/schema.ts

671import { z } from "zod";

672var EvaluationSpecSchema = z.object({

673 name: z.string().trim().min(1).max(256),

674 workspace: z.string().trim().min(1).max(32768),

675 prompt: z.string().trim().min(1).max(1e6),

676 verification: z.array(z.object({

•matchType = normalized_sha256 matchedPackage = flavor-code@1.3.17 matchedPath = dist/cli-main.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-main.jsView on unpkg

dist/chunk-PF457XCH.jsView file

339} L340: if (["powershell", "pwsh"].includes(name)) { L341: const flag = args.findIndex((arg) => ["-command", "-c"].includes(arg.toLowerCase()));

High

Shell

Package source references shell execution.

dist/chunk-PF457XCH.jsView on unpkg · L339

•Manifest-reachable source captures an API credential, sends it to a fixed unofficial gateway, and persists that redirection in agent or shell configuration. dist/chunk-PF457XCH.js: return text.replace(/\bsk-[A-Za-z0-9_-]+\b/g, "[redacted]").replace(/(authorization|api[_ -]?key|token)\s*[:=]\s*\S+/gi, "$1=[redacted]"); import { lstat, mkdir, readdir, readFile, realpath, writeFile } from "fs/promises"; await writeFile(path, `${existing}${separator}${append}${newline}`); authorizationUrl: "http://192.168.1.100:8091/authorize", await writeFile(configPath, JSON.stringify(example, null, 2) + "\n"); await writeFile(path, content); import { lstat as lstat2, mkdir as mkdir2, open, readFile as readFile2, readdir as readdir2, rename, rm, writeFile as writeFile2 } from "fs/promises"; await handle.writ

High

Credential Redirect Persistence

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

dist/chunk-PF457XCH.jsView on unpkg

•Manifest-reachable source resolves another installed package, overwrites its runtime code, and injects package-defined remote behavior. dist/chunk-PF457XCH.js: import { lstat, mkdir, readdir, readFile, realpath, writeFile } from "fs/promises"; import { copyFileSync, mkdirSync, readdirSync } from "fs"; ...facts.instructionFiles.map((file) => `Follow \`${file}\`.`), await writeFile(path, `${existing}${separator}${append}${newline}`); await writeFile(configPath, JSON.stringify(example, null, 2) + "\n"); else if (entry2.isFile()) copyFileSync(source, target); await writeFile(path, content); import { lstat as lstat2, mkdir as mkdir2, open, readFile as readFile2, readdir as readdir2, rename, rm, writeFile as writeFile2 } from "fs/promises";

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

Lines 9-49javascript

9// inside the host's activation timeout; WASM grammars and the database load on

10// first use.

12import { existsSync } from "node:fs";

13import { isAbsolute, join, relative } from "node:path";

15import { z } from "./vendor/zod/index.js"

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

Lines 8-48javascript

8var CONTRIBUTION_NAME_SOURCE = "^[a-zA-Z0-9][a-zA-Z0-9._:-]{0,127}$";

9var data = workerData;

10var port = parentPort;

11if (port === null) throw

dist/desktop/main.jsView file

8821function runShellHandler(descriptor, event, signal) { L8822: return new Promise((resolve41, reject) => { L8823: const child = spawn(descriptor.command, [...descriptor.args ?? []], { L8824: env: { ...process.env, ...descriptor.env }, L8825: shell: false,

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 · L8821

8860if (code !== 0) { L8861: reject(new Error(`Shell hook exited with code ${code}: ${stderr.trim()}`)); L8862: return; ... L8864: try { L8865: resolve41(HookDecisionSchema.parse(JSON.parse(stdout))); L8866: } catch (error) { ... L8869: }); L8870: child.stdin.end(JSON.stringify(event)); L8871: }); ... L8875: if (process.platform === "win32") { L8876: const killer = spawn("taskkill", ["/pid", String(child.pid), "/t", "/f"], { L8877: 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 · L8860

8860Trigger-reachable command-output exfiltration chain: manifest.main -> dist/desktop/main.js L8860: if (code !== 0) { L8861: reject(new Error(`Shell hook exited with code ${code}: ${stderr.trim()}`)); L8862: return; ... L8864: try { L8865: resolve41(HookDecisionSchema.parse(JSON.parse(stdout))); L8866: } catch (error) { ... L8869: }); L8870: child.stdin.end(JSON.stringify(event)); L8871: }); ... L8875: if (process.platform === "win32") { L8876: const killer = spawn("taskkill", ["/pid", String(child.pid), "/t", "/f"], { L8877: stdio: "ignore",

dist/cli.jsView file

•matchType = previous_version_dangerous_delta matchedPackage = flavor-code@1.3.16 matchedIdentity = npm:Zmxhdm9yLWNvZGU:1.3.16 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/cli.jsView on unpkg

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.js

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/chunk-HJOCNKPN.jsView file

•matchType = normalized_sha256 matchedPackage = flavor-code@1.3.17 matchedPath = dist/chunk-HJOCNKPN.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-HJOCNKPN.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

Source & flagged code

21 flagged · loading source

dist/cli-main.jsView file

656kind = "local"; L657: exec(request, signal) { L658: const cancellation = signal ?? new AbortController().signal;

High

Child Process

Package source references child process execution.

dist/cli-main.jsView on unpkg · L656

High

Known Malware Source Similarity

Source file is highly similar to a previously finalized malicious package; route for source-aware review.

dist/cli-main.jsView on unpkg

dist/chunk-PF457XCH.jsView file

339} L340: if (["powershell", "pwsh"].includes(name)) { L341: const flag = args.findIndex((arg) => ["-command", "-c"].includes(arg.toLowerCase()));

High

Shell

Package source references shell execution.

Findings

1 Critical15 High6 Medium7 Low

CriticalPrevious Version Dangerous Deltadist/cli.js

HighChild Processdist/cli-main.js

HighShelldist/chunk-PF457XCH.js

HighSame File Env Network Executiondist/desktop/main.js

HighCredential Redirect Persistencedist/chunk-PF457XCH.js

HighEntrypoint Foreign Package Code Overwritedist/chunk-PF457XCH.js

HighCommand Output Exfiltrationdist/desktop/main.js

HighCross File Remote Execution Contextdist/cli.js

HighTrigger Reachable Command Output Exfiltrationdist/desktop/main.js

HighKnown Malware Source Similaritydist/chunk-PF457XCH.js

HighKnown Malware Source Similaritydist/cli-main.js

Affected versions and remediation

This report applies to flavor-code@1.3.18.

See all versions of flavor-code for other recorded verdicts.

Review the evidence and your use of flavor-code@1.3.18 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: 2026-08-30 02:02:12.456Z (UTC).

Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.