@mastra/e2b@0.12.0

⚠ Under review

E2B cloud sandbox provider for Mastra workspaces

Static Scan Results

scanned 1mo ago · by rust-scanner

Static analysis completed at 93.0% confidence. No malicious behavior was detected; 8 low-signal pattern(s) were surfaced and cleared.

Static reason

No blocking static signals were detected.; previous stored version diff introduced dangerous source

Decision evidence

public snapshot

Behavioral surface

Source

ChildProcessCryptoEnvironmentVarsNetworkShell

Supply chain

HighEntropyStringsUrlStrings

ManifestNo manifest risk signals triggered.

scanned 2 file(s), 178 KB of source, external domains: api.github.com, github.com, nodejs.org, packages.cloud.google.com, packages.microsoft.com

Source & flagged code

3 flagged

dist/index.jsView file

Lines 1-23javascript

1import { MastraSandbox, ProcessHandle, SandboxNotReadyError, SandboxProcessManager, UnsupportedStdinCloseError, assertModesUnsupported } from "@mastra/core/workspace";

2import { Sandbox, Template } from "e2b";

3import { createHash, randomBytes } from "crypto";

4import { execFile } from "child_process";

5import { promisify } from "util";

Low

Weak Crypto

Package source references weak cryptographic algorithms.

dist/index.jsView on unpkg · L3

6import { FRAME_PREFIX, buildProgramModule, buildRunner, sanitizeToolId } from "@mastra/core/tools";

7import { transformSync } from "esbuild";

8/**

9* Node.js version installed into the default template — the current LTS at

10* pin time. An exact version rather than an `lts` alias so the template's

11* contents can never drift under a stable identity hash; bump deliberately

12* (each bump builds new templates).

13*/

14const DEFAULT_NODE_VERSION = "24.20.0";

15const NODE_VERSION_PATTERN = /^\d+\.\d+\.\d+$/;

16function isNamedTemplateSpec(spec) {

17 return typeof spec === "object" && spec !== null && "ref" in spec && "template" in spec;

18}

19function isDeferredNamedTemplateSpec(spec) {

20 return typeof spec === "object" && spec !== null && "resolveSpec" in spec && typeof spec.resolveSpec === "function";

21}

22/**

23* Create a base template with FUSE mounting dependencies pre-installed.

•matchType = previous_version_dangerous_delta matchedPackage = @mastra/e2b@0.11.0 matchedIdentity = npm:QG1hc3RyYS9lMmI:0.11.0 similarity = 0.750 summary = stored previous version shares package body but lacks this dangerous source file

High

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

package.jsonView file

•stage = ast_semantic_analysis; reason = ast_parse_error; limitedFiles = 1

High

Semantic Analysis Limited

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

package.jsonView on unpkg

Source & flagged code

3 flagged · loading source

dist/index.jsView file

High

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

3import { createHash, randomBytes } from "crypto"; L4: import { execFile } from "child_process"; L5: import { promisify } from "util"; ... L66: return { L67: template: Template().fromTemplate("base").aptInstall(aptPackages).runCmd(`curl -fsSL https://nodejs.org/dist/v${nodeVersion}/node-v${nodeVersion}-linux-x64.tar.gz | sudo tar -xz -C... L68: id: `mastra-${hash}`, ... L142: if (config.endpoint) validateEndpoint(config.endpoint); L143: if ((await sandbox.commands.run("which s3fs || echo \"not found\"")).stdout.includes("not found")) { L144: logger.warn(`${LOG_PREFIX} s3fs not found, attempting runtime installation...`); ... L168: await sandbox.commands.run(`sudo rm -f ${credentialsPath}`); L169: await sandbox.files.write(credentialsPath, credentialsContent); L170: await sandbox.command

Low

Weak Crypto

Package source references weak cryptographic algorithms.

dist/index.jsView on unpkg · L3

package.jsonView file

Findings

2 High2 Medium4 Low

HighSemantic Analysis Limitedpackage.json

HighPrevious Version Dangerous Deltadist/index.js

MediumNetwork

MediumEnvironment Vars

LowScripts Present

LowWeak Cryptodist/index.js

LowHigh Entropy Strings

LowUrl Strings

Affected versions and remediation

This report applies to @mastra/e2b@0.12.0.

See all versions of @mastra/e2b for other recorded verdicts.

Review the evidence and your use of @mastra/e2b@0.12.0 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: 2026-09-15 20:53:18.431Z (UTC).

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

Static Scan Results

Decision evidence

Source & flagged code

Source & flagged code

Findings

Affected versions and remediation

Related packages

More from @mastra

Behavioral surface

Source & flagged code

Related packages

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