registry / mastra / 1.25.1

mastra@1.25.1

cli for mastra

AI Security Review

scanned 2d ago · by lpm-firewall-ai

No malicious install-time or stealth attack surface was confirmed. Running the CLI enables opt-out telemetry and selected init options generate project-local agent/MCP configuration.

Static reason

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

Trigger

User runs the mastra CLI; agent files require selected init skills or --mcp.

Impact

Sends CLI telemetry to PostHog; selected initialization writes project configuration.

Mechanism

CLI telemetry plus explicit project scaffolding

Rationale

The scanner’s exfiltration and agent-control claims resolve to ordinary first-party CLI telemetry and explicitly selected scaffolding. No lifecycle hook, credential redirection, foreign-package overwrite, stealth persistence, or remote payload execution was found.

Evidence

package.jsondist/index.jsdist/analytics-BYD-0skL.jsdist/credentials-CE1thn6C.jsdist/client-x6vJatG_.js~/.mastra/analytics.jsonAGENTS.mdCLAUDE.md.cursor/mcp.json.vscode/mcp.json

Network endpoints1

us.posthog.com

Decision evidence

public snapshot

AI called this Clean at 91.0% confidence as Benign with low false-positive risk.

Evidence for block

CLI initializes PostHog telemetry to us.posthog.com when invoked.
Explicit init options can write project MCP/agent guide files.

Evidence against

package.json has no preinstall, install, or postinstall hook.
MCP and AGENTS.md writes occur only in the init flow when skills or an MCP editor option is selected.
Platform credentials are stored in ~/.mastra with restrictive directory/file modes for explicit login.

Behavioral surface

Source

ChildProcessCryptoDynamicRequireEnvironmentVarsFilesystemNetworkShellWebSocket

Supply chain

HighEntropyStringsMinifiedPossibleObfuscationProtestwareTelemetryUrlStrings

ManifestNo manifest risk signals triggered.

scanned 46 file(s), 3.48 MB of source, external domains: aomediacodec.github.io, api.open-meteo.com, app.posthog.com, base-ui.com, cloud-api.livekit.io, dev.w3.org, gateway-api.mastra.ai, gateway-api.staging.mastra.ai, geocoding-api.open-meteo.com, github.com, mastra.ai, observability.mastra.ai, output.signals.mastra.ai, platform.mastra.ai, prettier.io, projects.mastra.ai, raw.githubusercontent.com, react.dev, studio.mastra.ai, studio.staging.mastra.ai, us.posthog.com, www.w3.org

Source & flagged code

9 flagged

dist/studio/assets/livekit-client.esm-CKIgC2IJ.jsView file

13patternName = generic_password severity = medium line = 13 matchedText = `},e.par...+`\r

Medium

Secret Pattern

Package contains a possible secret pattern.

dist/studio/assets/livekit-client.esm-CKIgC2IJ.jsView on unpkg · L13

dist/studio/assets/tsx-B6W0miNI.jsView file

Lines 1-2javascript

1const e=Object.freeze(JSON.parse(`{"displayName":"TSX","name":"tsx","patterns":[{"include":"#directives"},{"include":"#statements"},{"include":"#shebang"}],"repository":{"access-modifier":{"match":"(?<![_$[:alnum:]])(?:(?<=\\\\.\\\\.\\\\.)|(?<!\\\\.))(abstract|declare|override|public|protected|private|readonly|static)(?![_$[:alnum:]])(?:(?=\\\\.\\\\.\\\\.)|(?!\\\\.))","name":"storage.modifier.tsx"},"after-operator-block-as-object-literal":{"begin":"(?<!\\\\+\\\\+|--)(?<=[:=(,\\\\[?+!>]|^await|[^\\\\._$[:alnum:]]await|^return|[^\\\\._$[:alnum:]]return|^yield|[^\\\\._$[:alnum:]]yield|^throw|[^\\ ...

Medium

Dynamic Require

Package source references dynamic require/import behavior.

dist/studio/assets/tsx-B6W0miNI.jsView on unpkg · L1

Long lines were clipped for display.

dist/analytics-BYD-0skL.jsView file

Lines 1-32javascript

1import { a as loadCredentials, i as getToken } from "./credentials-CE1thn6C.js";

2import { r as resolveCurrentOrg } from "./orgs-DOhO9kNz.js";

3import { InvalidArgumentError } from "commander";

dist/index.jsView file

•matchType = previous_version_dangerous_delta matchedPackage = mastra@1.25.0 matchedIdentity = npm:bWFzdHJh:1.25.0 similarity = 0.958 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/index.jsView on unpkg

•Manifest-reachable source captures an API credential, sends it to a fixed unofficial gateway, and persists that redirection in agent or shell configuration. dist/index.js: import { access, chmod, lstat, mkdir, mkdtemp, open, readFile, readdir, readlink, rm, stat, unlink, writeFile } from "fs/promises"; fs.writeFileSync(filePath, content); await fh.writeFile(JSON.stringify(manifest, null, 2)); const { writeFile } = await import("fs/promises"); await writeFile(fileURLToPath(uploadUrl), Buffer.from(zipBuffer)); await writeFile(resolveConfigPath(dir, configFile), JSON.stringify(config, null, 2) + "\n"); await writeFile(lockPath, JSON.stringify(data), { await writeFile(lockPath, JSON.stringify(data), {

High

Credential Redirect Persistence

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

dist/index.jsView on unpkg

dist/studio/assets/main-v7G9bA48.jsView file

•path = dist/studio/assets/main-v7G9bA48.js kind = oversized_source_file sizeBytes = 7065422 magicHex = [redacted]

Medium

Oversized Source File

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

dist/studio/assets/main-v7G9bA48.jsView on unpkg

Source & flagged code

9 flagged · loading source

dist/studio/assets/livekit-client.esm-CKIgC2IJ.jsView file

13patternName = generic_password severity = medium line = 13 matchedText = `},e.par...+`\r

Medium

Secret Pattern

Package contains a possible secret pattern.

dist/studio/assets/livekit-client.esm-CKIgC2IJ.jsView on unpkg · L13

dist/studio/assets/tsx-B6W0miNI.jsView file

1const e=Object.freeze(JSON.parse(`{"displayName":"TSX","name":"tsx","patterns":[{"include":"#directives"},{"include":"#statements"},{"include":"#shebang"}],"repository":{"access-mo...

Medium

Dynamic Require

Package source references dynamic require/import behavior.

dist/studio/assets/tsx-B6W0miNI.jsView on unpkg · L1

dist/analytics-BYD-0skL.jsView file

Findings

3 Critical3 High7 Medium5 Low

CriticalHardcoded Runtime Data Exfiltrationdist/analytics-BYD-0skL.js

CriticalTrigger Reachable Dangerous Capabilitydist/analytics-BYD-0skL.js

CriticalPrevious Version Dangerous Deltadist/index.js

HighCredential Redirect Persistencedist/index.js

HighEntrypoint Foreign Package Code Overwritedist/analytics-BYD-0skL.js

HighTrigger Reachable External Ai Agent Control Surface Mutationdist/analytics-BYD-0skL.js

MediumSecret Patterndist/studio/assets/livekit-client.esm-CKIgC2IJ.js

MediumDynamic Requiredist/studio/assets/tsx-B6W0miNI.js

MediumNetwork

MediumEnvironment Vars

MediumProtestware

Medium