registry / AI-agent capability abuse / @p4code/cli / 0.5.2

@p4code/cli@0.5.2

P4 Code coding agent server and command-line client

AI Security Review

scanned 1mo ago · by lpm-firewall-ai

The package has real high-impact agent and shell capabilities, so it warrants a warning. Those capabilities are exposed through the executable rather than an automatic install hook, and no concrete exfiltration or stealth persistence was found.

Static reason

High-risk behavior combination matched malicious policy.; source matched previously finalized malicious package; routed for review

Trigger

A user runs p4c or invokes its service self-update command.

Impact

An authorized user or client of the running service may execute commands in its configured workspace and environment.

Mechanism

Local agent server with PTY shell spawning and an explicit npm self-update command.

AI rationale

Evidence

dist/bin.mjsdist/NodePtyAdapter-BQAnH2v0.mjsdist/BunPtyAdapter-CLDq7yr1.mjs

Decision evidence

public snapshot

AI called this Suspicious at 84.0% confidence as Dangerous Capability with medium false-positive risk.

Evidence for warning

The package exposes a user-run p4c executable that starts a server.
The server loads adapters that spawn interactive shell processes with supplied working directories and environments.
The explicit service self-update command globally installs another release of this package.

Evidence against

package.json contains no preinstall, install, or postinstall lifecycle hook.
The HTTP server defaults to loopback binding.
No source evidence showed automatic credential collection or exfiltration.

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystemNetworkShell

Supply chain

HighEntropyStringsMinifiedPossibleObfuscationUrlStrings

ManifestNo manifest risk signals triggered.

scanned 495 file(s), 16.9 MB of source, external domains: 127.0.0.1, api.meta.ai, asset.invalid, base-ui.com, chevrotain.io, cli.github.com, en.wikipedia.org, github.com, gitlab.com, langium.org, p4.chat, p4.codes, react.dev, registry.npmjs.org, www.w3.org

Source & flagged code

22 flagged

dist/client/assets/worker-CTbBhd8-.jsView file

151?|[ L152: \v\f\u2028\u2029])`),t));else if(c===`posix`)if(!i&&(u===`graph`||u===`print`)){if(r===`strict`)throw Error(`POSIX class "${u}" requires min target ES2024 or non-strict accuracy`)... L153: `))&&(e=e.trim()),(!n.newlineIsToken||!t.includes(`

High

Child Process

Package source references child process execution.

dist/client/assets/worker-CTbBhd8-.jsView on unpkg · L151

dist/bin.mjsView file

13import * as NodeOS from "node:os"; L14: import * as NodeNet from "node:net"; L15: import * as Data from "effect/Data"; ... L21: import * as NodePath from "node:path"; L22: import * as NodeChildProcess from "node:child_process"; L23: import * as NodeFS from "node:fs"; ... L261: //#endregion L262: //#region package.json L263: var version$1 = "0.5.2"; ... L396: /** L397: * Escapes a single argument for `cmd.exe` shell mode (`spawn(..., { shell: true })` L398: * on Windows). Node joins the command and arguments with spaces and hands the

Critical

Sensitive Archive Exfiltration

Source archives sensitive local configuration and publishes encoded chunks through an authenticated package-registry request.

dist/bin.mjsView on unpkg · L13

Critical

Credential Exfiltration

Source appears to send environment or credential material to an external endpoint.

dist/bin.mjsView on unpkg · L13

13Trigger-reachable chain: manifest.bin -> dist/bin.mjs L13: import * as NodeOS from "node:os"; L14: import * as NodeNet from "node:net"; L15: import * as Data from "effect/Data"; ... L21: import * as NodePath from "node:path"; L22: import * as NodeChildProcess from "node:child_process"; L23: import * as NodeFS from "node:fs"; ... L261: //#endregion L262: //#region package.json L263: var version$1 = "0.5.2"; ... L396: /** L397: * Escapes a single argument for `cmd.exe` shell mode (`spawn(..., { shell: true })` L398: * on Windows). Node joins the command and arguments with spaces and hands the

Critical

Trigger Reachable Dangerous Capability

A package entrypoint or install-time lifecycle script reaches a source file with blocking dangerous behavior.

dist/bin.mjsView on unpkg · L13

384const POSIX_PATH_DELIMITER = ":"; L385: const WINDOWS_SHELL_CANDIDATES = ["pwsh.exe", "powershell.exe"]; L386: function canExecuteFile(filePath) {

High

Shell

Package source references shell execution.

dist/bin.mjsView on unpkg · L384

•Manifest-reachable source captures an API credential, sends it to a fixed unofficial gateway, and persists that redirection in agent or shell configuration. dist/bin.mjs: import * as NodeReadline from "node:readline"; }).pipe(Effect.flatMap((encoded) => fs.writeFileString(cachePath, encoded)), Effect.ignore); var EnvironmentAuthorizationError = class extends Schema$1.TaggedErrorClass()("EnvironmentAuthorizationError", { baseUrl: Schema$1.String authorization: Schema$1.optionalKey(Schema$1.String), httpBaseUrl: TrimmedNonEmptyString, wsBaseUrl: TrimmedNonEmptyString, httpBaseUrl: Schema$1.NullOr(Schema$1.String),

High

Credential Redirect Persistence

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

dist/bin.mjsView on unpkg

High

Command Output Exfiltration

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

dist/bin.mjsView on unpkg · L13

21import * as NodePath from "node:path"; L22: import * as NodeChildProcess from "node:child_process"; L23: import * as NodeFS from "node:fs"; ... L1846: name: TrimmedNonEmptyString, L1847: baseUrl: Schema$1.String L1848: }); ... L46628: const dir = path.join(os.homedir(), '.p4', 'device', 'tools', name, version); L46629: try { return file(path.join(dir, 'node_modules', name, entry)) && fs.readFileSync(path.join(dir, '.install-complete'), 'utf8').trim() === version; } catch { return false; } L46630: };

High

Remote Agent Bridge

Source exposes local file and command tools to a remote model endpoint.

dist/bin.mjsView on unpkg · L21

13Trigger-reachable credential exfiltration chain: manifest.bin -> dist/bin.mjs L13: import * as NodeOS from "node:os"; L14: import * as NodeNet from "node:net"; L15: import * as Data from "effect/Data"; ... L21: import * as NodePath from "node:path"; L22: import * as NodeChildProcess from "node:child_process"; L23: import * as NodeFS from "node:fs"; ... L261: //#endregion L262: //#region package.json L263: var version$1 = "0.5.2"; ... L396: /** L397: * Escapes a single argument for `cmd.exe` shell mode (`spawn(..., { shell: true })` L398: * on Windows). Node joins the command and arguments with spaces and hands the

High

Trigger Reachable Credential Exfiltration

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

dist/bin.mjsView on unpkg · L13

•stage = ast_semantic_analysis; reason = ast_path_work_budget_exceeded; limitedFiles = 8

High

Semantic Analysis Limited

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

dist/bin.mjsView on unpkg

•path = dist/bin.mjs kind = oversized_source_file sizeBytes = 6378058 magicHex = [redacted]

Medium

Oversized Source File

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

dist/bin.mjsView on unpkg

•path = dist/bin.mjs kind = oversized_cli_entrypoint sizeBytes = 6378058 magicHex = [redacted]

Medium

Oversized Cli Entrypoint

Package contains an oversized executable-looking CLI entrypoint.

dist/bin.mjsView on unpkg

dist/resource-monitor/darwin-x64/p4-resource-monitorView file

•path = dist/resource-monitor/darwin-x64/p4-resource-monitor kind = native_binary sizeBytes = 575344 magicHex = [redacted]

Medium

Ships Native Binary

Package ships native binary artifacts.

dist/resource-monitor/darwin-x64/p4-resource-monitorView on unpkg

dist/NodePtyAdapter-BQAnH2v0.mjsView file

•matchType = normalized_sha256 matchedPackage = @p4code/cli@0.4.12 matchedPath = dist/NodePtyAdapter-BQAnH2v0.mjs matchedIdentity = npm:QHA0Y29kZS9jbGk:0.4.12 similarity = 1.000 summary = normalized source hash matched finalized malicious source

High