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@jait/gateway@0.1.802: Malicious npm security report (Block) | LPM Firewall

registry / @jait/gateway / 0.1.802

@jait/gateway@0.1.802

Jait AI gateway — local-first AI coding agent with terminal, filesystem, and browser control

AI Security Review

scanned 2h ago · by lpm-firewall-ai

The postinstall hook automatically provisions and executes an external Python runtime dependency. It writes a virtual environment under the user's home directory before any explicit Jait command is invoked.

Static reason

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

Trigger

npm installation of the package

Impact

Installing this npm package also causes code from a separate Python package supply chain to be installed and executed in a home-directory virtual environment.

Mechanism

Postinstall pip provisioning of an external Python package

Attack narrative

During npm installation, the postinstall hook imports the runtime manager. If its expected executable is absent, it creates ~/.jait/runtime/graphify/venv and invokes pip to install graphifyy==0.9.30. This silently extends installation into a separate Python package supply chain and can execute that artifact without a user command.

Rationale

The package has an automatic install-time hook that installs and executes a separate Python artifact in the user's home directory. That unconsented external payload installation is concrete install-hook abuse, even though the inspected JavaScript does not directly harvest credentials.

Evidence

package.jsonbin/install-runtime.mjsdist/services/code-graph/graphify-runtime.js~/.jait/runtime/graphify/venv~/.jait/runtime/graphify/runtime.json

Decision evidence

Source & flagged code

17 flagged · loading source

package.jsonView file

•scripts.postinstall = node ./bin/install-runtime.mjs

High

Install Time Lifecycle Scripts

Package defines install-time lifecycle scripts.

package.jsonView on unpkg

web-dist/assets/index-DXLReBme.jsView file

141?|[ L142: \v\f\u2028\u2029])`),r));else if(p==="posix")if(!o&&(c==="graph"||c==="print")){if(i==="strict")throw new Error(`POSIX class "${c}" requires min target ES2024 or non-strict accura... L143: //# sourceMappingURL=index-DXLReBme.js.map

High

Child Process

Package source references child process execution.

web-dist/assets/index-DXLReBme.jsView on unpkg · L141

bin/jait.mjsView file

742L743: const execArgs = [nodePath, jaitBin]; L744: if (existsSync(envFlag)) execArgs.push("--env", envFlag);

High

Shell

Package source references shell execution.

bin/jait.mjsView on unpkg · L742

30Manifest entrypoint (manifest.bin) carries capability families absent from dist/build output: environment+network, sensitive-file+network, execution+network L30: import { fileURLToPath } from "node:url"; L31: import { execFileSync, execSync, spawn, spawnSync } from "node:child_process"; L32: import { createConnection } from "node:net"; L33: import { createInterface } from "node:readline"; L34: L35: const __dirname = dirname(fileURLToPath(import.meta.url)); L36: const pkg = JSON.parse( L37: readFileSync(resolve(__dirname, "..", "package.json"), "utf8"), L38: ); ... L118: } catch (err) { L119: if (silent) return err.stdout || ""; L120: throw err;

High

Entrypoint Build Divergence

Manifest entrypoint contains risky behavior absent from dist/build output.

bin/jait.mjsView on unpkg · L30

dist/tools/screenshot-tools.jsView file

59try { L60: const loadPlaywright = new Function("return import('playwright')"); L61: const mod = (await loadPlaywright());

High

Eval

Package source references dynamic code evaluation.

dist/tools/screenshot-tools.jsView on unpkg · L59

web-dist/assets/codeql-DsOJ9woJ.jsView file

1const e=Object.freeze(JSON.parse('{"displayName":"CodeQL","fileTypes":["ql","qll"],"name":"codeql","patterns":[{"include":"#module-member"}],"repository":{"abstract":{"match":"\\\\... L2: //# sourceMappingURL=codeql-DsOJ9woJ.js.map

Medium

Dynamic Require

Package source references dynamic require/import behavior.

web-dist/assets/codeql-DsOJ9woJ.jsView on unpkg · L1

dist/tools/redeploy-tools.jsView file

101log(`🐤 Starting canary on port ${canaryPort}...\n`); L102: const canary = spawn("jait", ["--port", String(canaryPort)], { L103: stdio: "ignore", L104: detached: true, L105: env: { ...process.env, PORT: String(canaryPort), __JAIT_CLI: "1" }, L106: windowsHide: true, ... L108: canary.unref(); L109: const healthy = await waitForHealth(`http://127.0.0.1:${canaryPort}`, 30_000); L110: if (!healthy) {

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/tools/redeploy-tools.jsView on unpkg · L101

6* **systemd** (detected when INVOCATION_ID is set): L7: * 1. npm install -g @jait/gateway@latest L8: * 2. Spawn canary on PORT+1, health-check it ... L19: */ L20: import { execSync, spawn } from "node:child_process"; L21: export function createRedeployTool(deps) {

High

Runtime Package Install

Package source invokes a package manager install command at runtime.

dist/tools/redeploy-tools.jsView on unpkg · L6

dist/tools/browser-tools.jsView file

5const DEFAULT_BROWSER_ID = "browser-default"; L6: const DEFAULT_OPENAI_BASE_URL = "https://api.openai.com/v1"; L7: const DEFAULT_OPENAI_WEB_SEARCH_MODEL = "gpt-5"; ... L132: message: `Navigated to ${snapshot.url}`, L133: data: buildSnapshotPayload(surface.id, snapshot, session), L134: }; ... L363: const timeout = setTimeout(() => controller.abort(), timeoutMs); L364: const ignoreTlsErrors = input.ignoreTlsErrors === true || process.env["WEB_FETCH_IGNORE_TLS_ERRORS"] === "true"; L365: try { ... L371: }, ignoreTlsErrors); L372: const text = await response.text(); L373: return {

Critical

Credential Exfiltration

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

dist/tools/browser-tools.jsView on unpkg · L5

5Trigger-reachable chain: scripts.start -> dist/index.js -> dist/tools/index.js -> dist/tools/browser-tools.js L5: const DEFAULT_BROWSER_ID = "browser-default"; L6: const DEFAULT_OPENAI_BASE_URL = "https://api.openai.com/v1"; L7: const DEFAULT_OPENAI_WEB_SEARCH_MODEL = "gpt-5"; ... L132: message: `Navigated to ${snapshot.url}`, L133: data: buildSnapshotPayload(surface.id, snapshot, session), L134: }; ... L363: const timeout = setTimeout(() => controller.abort(), timeoutMs); L364: const ignoreTlsErrors = input.ignoreTlsErrors === true || process.env["WEB_FETCH_IGNORE_TLS_ERRORS"] === "true"; L365: try { ... L371: }, ignoreTlsErrors); L372: const text = await response.text(); L373: return {

Critical

Trigger Reachable Dangerous Capability

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

dist/tools/browser-tools.jsView on unpkg · L5

dist/surfaces/browser.jsView file

398package = @jait/gateway; repositoryIdentity = jait; dependency = playwright L398: // boot in environments that do not need browser automation. L399: const loadPlaywright = new Function("return import('playwright')"); L400: let mod;

High

Copied Package Dependency Bridge

Package metadata claims a different repository identity while copied source loads a runtime dependency bridge.

dist/surfaces/browser.jsView on unpkg · L398

dist/services/git-forge.jsView file

6Trigger-reachable credential exfiltration chain: scripts.start -> dist/index.js -> dist/services/thread-review-sync.js -> dist/services/git-forge.js L6: */ L7: import { exec as execCb } from "node:child_process"; L8: import { writeFile, unlink } from "node:fs/promises"; ... L13: return new Promise((resolve, reject) => { L14: execCb(cmd, { encoding: "utf-8", windowsHide: true, ...opts }, (error, stdout, stderr) => { L15: if (error) { ... L27: function cleanGhEnv() { L28: const { GH_REPO, GH_HOST, GH_TOKEN, GITHUB_TOKEN, ...rest } = process.env; L29: return rest; ... L101: proc.on("error", () => resolve(null)); L102: proc.stdin.write("protocol=https\nhost=github.com\n\n"); L103: proc.stdin.end();

High

Trigger Reachable Credential Exfiltration

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

dist/services/git-forge.jsView on unpkg · L6

web-dist/noVNC/app/images/icons/MakefileView file

•path = web-[redacted] kind = build_helper sizeBytes = 1331 magicHex = [redacted]

Medium

Ships Build Helper

Package ships non-JavaScript build or shell helper files.

web-dist/noVNC/app/images/icons/MakefileView on unpkg

web-dist/noVNC/app/sounds/bell.ogaView file

•path = web-dist/noVNC/app/sounds/bell.oga kind = high_entropy_blob sizeBytes = 8495 magicHex = [redacted]

High

Ships High Entropy Blob

Package ships high-entropy non-source blobs.

web-dist/noVNC/app/sounds/bell.ogaView on unpkg

dist/channels/manager.js#virtual:normalized:round1View file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 17

High

Semantic Analysis Limited

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

dist/channels/manager.js#virtual:normalized:round1View on unpkg

web-dist/assets/cytoscape.esm-DTSO7Bv0.jsView file

•matchType = normalized_sha256 matchedPackage = termdock@1.4.115 matchedPath = dist/client/assets/cytoscape.esm-D3_iZ_3b.js matchedIdentity = npm:dGVybWRvY2s:1.4.115 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.

web-dist/assets/cytoscape.esm-DTSO7Bv0.jsView on unpkg

web-dist/assets/flowDiagram-UKHOOZJN-DEJCA5lL.jsView file

•matchType = normalized_sha256 matchedPackage = @seele00/seele@0.1.81 matchedPath = web/dist/assets/flowDiagram-23GEKE2U-Di3U_AN7.js matchedIdentity = npm:QHNlZWxlMDAvc2VlbGU:0.1.81 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.

web-dist/assets/flowDiagram-UKHOOZJN-DEJCA5lL.jsView on unpkg