registry / @pimmesz/afterburner / 2.18.0

@pimmesz/afterburner@2.18.0

Convert idle AI-subscription quota (Claude or Codex) into shippable engineering work: budget-aware trigger, bounded task selection, PR-only output.

AI Security Review

scanned 7d ago · by lpm-firewall-ai

No confirmed malicious attack surface was found. The risky primitives are package-aligned automation features gated behind explicit CLI/config use, not install-time or import-time behavior.

Static reason

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

Trigger

User runs afterburner CLI commands such as auth, run-once, watch, notify, schedule, or update.

Impact

Can modify configured repositories through isolated worktrees/branches and send configured run notifications; no evidence of covert credential harvesting or exfiltration.

Mechanism

User-invoked AI agent orchestration, notifications, schedule/config writes, and explicit update command

Rationale

Static inspection shows a legitimate AI automation CLI with dangerous-but-expected user-invoked capabilities, explicit configuration gates, local token storage, and package-aligned network use. There is no lifecycle execution, covert exfiltration, persistence, destructive payload, dependency confusion, or unconsented agent control-surface mutation.

Evidence

package.jsondist/cli/index.jsdist/chunk-KUBWWM7W.jsdist/core/index.jsskill/SKILL.md.env.exampleafterburner.config.example.tsREADME.md

Network endpoints3

ntfy.shapi.telegram.orgregistry.npmjs.org

Decision evidence

public snapshot

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

Evidence for block

Evidence against

package.json has no install/postinstall lifecycle hooks; CLI bins are user-invoked dist/cli/index.js
dist/cli/index.js defaultSpawnSetupToken runs `claude setup-token` only from auth flow and masks token in console output before storing locally
dist/chunk-KUBWWM7W.js spawns `claude`/`codex`, git, gh, and configured verify/setup commands as the core AI PR automation feature
dist/chunk-KUBWWM7W.js sends notifications only to configured ntfy/Telegram endpoints and drops tokens for non-HTTPS ntfy/Telegram APIs
dist/chunk-KUBWWM7W.js strips ANTHROPIC/OpenAI/Codex API keys from agent env and treats task/issue text as untrusted env data
dist/cli/index.js update command is explicit user action; registry URL is validated for shell-unsafe characters before shell execution

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsFilesystemNetworkShell

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 4 file(s), 430 KB of source, external domains: afterburner.run, api.telegram.org, crontab.guru, git-scm.com, github.com, nodejs.org, ntfy.sh, registry.npmjs.org, www.apple.com

Source & flagged code

8 flagged

dist/cli/index.jsView file

Lines 50-90javascript

50 readUsageCache,

51 reapOrphanWorktrees,

52 runInteractiveTurn,

53 runOnce,

54 sanitizeCodexEnv,

55 sanitizeSpawnEnv,

56 sanitizeTitle,

57 scheduleArmedState,

58 scheduleArtifactPaths,

59 scheduleStopCommands,

60 shouldIgnite,

61 spawnAgentProcess,

62 startWatch,

63 withGoalPlanner,

64 writeOAuthToken,

65 writeUsageCache

66} from "../chunk-KUBWWM7W.js";

68// src/cli/index.ts

69import { Command } from "commander";

71// package.json

72var package_default = {

Critical

Command Output Exfiltration

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

dist/cli/index.jsView on unpkg · L70

Critical

Trigger Reachable Dangerous Capability

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

dist/cli/index.jsView on unpkg · L70

Medium

Install Persistence

Source writes installer persistence such as shell profile or service configuration.

dist/cli/index.jsView on unpkg · L70

73 name: "@pimmesz/afterburner",

74 version: "2.18.0",

75 description: "Convert idle AI-subscription quota (Claude or Codex) into shippable engineering work: budget-aware trigger, bounded task selection, PR-only output.",

76 license: "Apache-2.0",

77 publishConfig: {

78 access: "public"

79 },

80 type: "module",

81 packageManager: "pnpm@11.5.3",

82 engines: {

83 node: ">=22.12"

84 },

85 bin: {

86 afterburner: "dist/cli/index.js",

87 abr: "dist/cli/index.js"

88 },

89 main: "./dist/core/index.js",

90 types: "./dist/core/index.d.ts",

Lines 306-346javascript

306 if (!fancy || process.env.CI) {

307 console.log(banner());

308 return;

309 }

310 const jet = `${emoji.jet} `;

311 for (let pos

Lines 2988-3028javascript

2988 if (process.env[key]) {

2989 results2.push({

2990 name: "env",

2991 ok: false,

2992 detail: `${key} is set: with \`codex exec\` it bills the metered OpenAI API instead of spending subscription quota`,

2993 fix: `unset ${key} (Afterburner also strips it from child processes as a defense, but fix the environment).`

2994 });

2995 }

Lines 3129-3169javascript

3129 const has = deps.has ?? commandExistsSync;

3130 if (platform === "darwin") {

3131 return has("terminal-notifier") ? {

3132 name: "notify",

3133 ok: true,

3134 detail: "desktop banners via terminal-notifier (clickable PR links)"

dist/chunk-KUBWWM7W.jsView file

•matchType = previous_version_dangerous_delta matchedPackage = @pimmesz/afterburner@2.17.1 matchedIdentity = npm:QHBpbW1lc3ovYWZ0ZXJidXJuZXI:2.17.1 similarity = 0.500 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-KUBWWM7W.jsView on unpkg

Source & flagged code

8 flagged · loading source

dist/cli/index.jsView file

70L71: // package.json L72: var package_default = { ... L117: type: "git", L118: url: "git+https://github.com/pimmesz/afterburner.git" L119: }, ... L156: // src/cli/ui.ts L157: var noColor = !!process.env.NO_COLOR || process.env.TERM === "dumb"; L158: var fancy = process.stdout.isTTY === true && !noColor; L159: var fancyErr = process.stderr.isTTY === true && !noColor; L160: var canAnimate = fancyErr && !process.env.CI; L161: var paint = (enabled) => (open2, close) => (s) => enabled ? `\x1B[${open2}m${s}\x1B[${close}m` : s;

Critical

Command Output Exfiltration

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

dist/cli/index.jsView on unpkg · L70

70Trigger-reachable chain: manifest.bin -> dist/cli/index.js L70: L71: // package.json L72: var package_default = { ... L117: type: "git", L118: url: "git+https://github.com/pimmesz/afterburner.git" L119: }, ... L156: // src/cli/ui.ts L157: var noColor = !!process.env.NO_COLOR || process.env.TERM === "dumb"; L158: var fancy = process.stdout.isTTY === true && !noColor; L159: var fancyErr = process.stderr.isTTY === true && !noColor; L160: var canAnimate = fancyErr && !process.env.CI; L161: var paint = (enabled) => (open2, close) => (s) => enabled ? `\x1B[${open2}m${s}\x1B[${close}m` : s;

Critical

Trigger Reachable Dangerous Capability

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

dist/cli/index.jsView on unpkg · L70

326// src/cli/commands/auth.ts L327: import { spawn } from "child_process"; L328: import { createInterface } from "readline";

High

Child Process

Package source references child process execution.

dist/cli/index.jsView on unpkg · L326

3149if (platform === "win32") { L3150: return { name: "notify", ok: true, detail: "desktop banners via PowerShell toast" }; L3151: }

High

Shell

Package source references shell execution.

dist/cli/index.jsView on unpkg · L3149

3149if (platform === "win32") { L3150: return { name: "notify", ok: true, detail: "desktop banners via PowerShell toast" }; L3151: } ... L3159: function checkNtfy(config) { L3160: const hasToken = !!process.env.AFTERBURNER_NTFY_TOKEN; L3161: const server = config.notify.ntfy.server; L3162: if (hasToken && !server.startsWith("https://")) { L3163: return {

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/cli/index.jsView on unpkg · L3149

3008const results = []; L3009: const version = spawnSync("claude", ["--version"], { encoding: "utf8" }); L3010: if (version.status !== 0) { ... L3014: detail: "claude-code engine selected but the `claude` CLI is not on PATH", L3015: fix: "Install Claude Code: `npm install -g @anthropic-ai/claude-code`, then run `claude /login`." L3016: });

High

Runtime Package Install

Package source invokes a package manager install command at runtime.

dist/cli/index.jsView on unpkg · L3008

Medium

Install Persistence

Source writes installer persistence such as shell profile or service configuration.

dist/cli/index.jsView on unpkg · L70

dist/chunk-KUBWWM7W.jsView 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-KUBWWM7W.jsView on unpkg

Findings

3 Critical4 High4 Medium4 Low

CriticalCommand Output Exfiltrationdist/cli/index.js

CriticalTrigger Reachable Dangerous Capabilitydist/cli/index.js

CriticalPrevious Version Dangerous Deltadist/chunk-KUBWWM7W.js

HighChild Processdist/cli/index.js

HighShelldist/cli/index.js

HighSame File Env Network Executiondist/cli/index.js

HighRuntime Package Installdist/cli/index.js

MediumNetwork

MediumEnvironment Vars

MediumInstall Persistencedist/cli/index.js

MediumStructural Risk Force Deep Review

LowScripts Present

LowFilesystem

LowHigh Entropy Strings

LowUrl Strings

Source & flagged code

8 flagged

dist/cli/index.jsView file

Lines 50-90javascript

50 readUsageCache,

51 reapOrphanWorktrees,

52 runInteractiveTurn,

53 runOnce,

54 sanitizeCodexEnv,

55 sanitizeSpawnEnv,

56 sanitizeTitle,

57 scheduleArmedState,

58 scheduleArtifactPaths,

59 scheduleStopCommands,

60 shouldIgnite,

61 spawnAgentProcess,

62 startWatch,

63 withGoalPlanner,

64 writeOAuthToken,

65 writeUsageCache

66} from "../chunk-KUBWWM7W.js";

68// src/cli/index.ts

69import { Command } from "commander";

71// package.json

72var package_default = {

Critical

Command Output Exfiltration

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

dist/cli/index.jsView on unpkg · L70

Critical

Trigger Reachable Dangerous Capability

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

dist/cli/index.jsView on unpkg · L70

Medium

Install Persistence

Source writes installer persistence such as shell profile or service configuration.

dist/cli/index.jsView on unpkg · L70

73 name: "@pimmesz/afterburner",

74 version: "2.18.0",

75 description: "Convert idle AI-subscription quota (Claude or Codex) into shippable engineering work: budget-aware trigger, bounded task selection, PR-only output.",

76 license: "Apache-2.0",

77 publishConfig: {

78 access: "public"

79 },

80 type: "module",

81 packageManager: "pnpm@11.5.3",

82 engines: {

83 node: ">=22.12"

84 },

85 bin: {

86 afterburner: "dist/cli/index.js",

87 abr: "dist/cli/index.js"

88 },

89 main: "./dist/core/index.js",

90 types: "./dist/core/index.d.ts",

Lines 306-346javascript

306 if (!fancy || process.env.CI) {

307 console.log(banner());

308 return;

309 }

310 const jet = `${emoji.jet} `;

311 for (let pos

Lines 2988-3028javascript

2988 if (process.env[key]) {

2989 results2.push({

2990 name: "env",

2991 ok: false,

2992 detail: `${key} is set: with \`codex exec\` it bills the metered OpenAI API instead of spending subscription quota`,

2993 fix: `unset ${key} (Afterburner also strips it from child processes as a defense, but fix the environment).`

2994 });

2995 }

Lines 3129-3169javascript

3129 const has = deps.has ?? commandExistsSync;

3130 if (platform === "darwin") {

3131 return has("terminal-notifier") ? {

3132 name: "notify",

3133 ok: true,

3134 detail: "desktop banners via terminal-notifier (clickable PR links)"

dist/chunk-KUBWWM7W.jsView 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-KUBWWM7W.jsView on unpkg