← Home

@metamask/browser-playground

A browser test dapp for multichain api

15
Versions
UNLICENSED
License
No
Install Scripts
Verified
Provenance

Supply chain provenance

Status for the latest visible version.

SLSA provenance attestation npm registry signatures gitHead linked

Maintainers

kumavismetamaskbotgudahttmrtenmcmirenaugtur

Keywords

MetaMaskEthereum

Accepted risks

Findings the reviewer chose to accept rather than block on.

SourceRuleReasonAccepted byWhen
source-diff obfuscated-file:build/static/js/main.6a70c790.js AI (source-diff): Standard webpack production bundle for a React app; expected for this package. ai
source-diff net-exec-file:build/static/js/main.6a70c790.js AI (source-diff): Bundled dapp code with network calls and eval from webpack runtime; not malicious. ai
provenance publisher-changed AI (provenance): Migration from metamaskbot to GitHub Actions with SLSA provenance; legitimate CI change. ai
source-diff obfuscated-file:build/static/js/main.1ec9cd95.js AI (source-diff): Standard CRA webpack production bundle; expected for this browser playground package. ai
source-diff net-exec-file:build/static/js/main.1ec9cd95.js AI (source-diff): Bundled React app with fetch calls and eval from webpack runtime; not malicious. ai
source-diff net-exec-file:build/static/js/main.ddd1d44e.js AI (source-diff): Bundled React app naturally contains fetch/eval patterns; not malicious for this package. ai
source-diff obfuscated-file:build/static/js/main.ddd1d44e.js AI (source-diff): Standard CRA/webpack production bundle; minification expected for this browser playground package. ai
source-diff net-exec-file:build/static/js/main.5a1e472c.js AI (source-diff): Network calls and dynamic module loading are inherent to a bundled React dapp; no dropper/loader pattern present. ai
source-diff obfuscated-file:build/static/js/main.5a1e472c.js AI (source-diff): Standard webpack minified build output for a MetaMask browser playground; expected artifact. ai
source-diff net-exec-file:build/static/js/main.31e1a1d6.js AI (source-diff): Browser app bundle combining fetch/XHR with dynamic module loading is expected for a React dapp; no dropper pattern evident in samples. ai
source-diff obfuscated-file:build/static/js/main.31e1a1d6.js AI (source-diff): Standard webpack-minified React app bundle; source maps included; legitimate MetaMask playground package. ai
source-diff obfuscated-file:build/static/js/main.11fdc90f.js AI (source-diff): Standard webpack minified main bundle from craco build; expected output for this browser playground package. ai
source-diff net-exec-file:build/static/js/main.11fdc90f.js AI (source-diff): Browser dapp bundle legitimately contains fetch calls and dynamic module loading via webpack runtime; not dropper behavior. ai
source-diff net-exec-file:build/static/js/main.2f01c3f9.js AI (source-diff): Browser dapp bundle; network calls and dynamic module loading are expected in a webpack React app. ai
source-diff obfuscated-file:build/static/js/127.6f28ac63.chunk.js AI (source-diff): Standard webpack-minified React build output for a browser dapp; not obfuscation. ai
source-diff obfuscated-file:build/static/js/288.51cc5192.chunk.js AI (source-diff): Standard webpack-minified React build output for a browser dapp; not obfuscation. ai
source-diff obfuscated-file:build/static/js/921.58d10f34.chunk.js AI (source-diff): Standard webpack-minified React build output for a browser dapp; not obfuscation. ai
source-diff obfuscated-file:build/static/js/main.2f01c3f9.js AI (source-diff): Standard webpack-minified React build output for a browser dapp; not obfuscation. ai
source-diff obfuscated-file:build/static/js/29.8d088763.chunk.js AI (source-diff): Standard webpack minified build output for a React dapp; not obfuscation. ai
source-diff net-exec-file:build/static/js/main.8cb80a7d.js AI (source-diff): Network calls and dynamic module loading are expected in a bundled browser dapp; no dropper behavior evident. ai
source-diff obfuscated-file:build/static/js/main.8cb80a7d.js AI (source-diff): Standard webpack minified build output for a React dapp; not obfuscation. ai
source-diff net-exec-file:build/static/js/main.68735b63.js AI (source-diff): Network calls and dynamic module loading are normal in a bundled React dapp; no dropper behavior evident in sample. ai
source-diff obfuscated-file:build/static/js/main.68735b63.js AI (source-diff): Standard CRA/craco production bundle; minified output is expected for this browser playground package. ai
source-diff obfuscated-file:build/static/js/main.4f702492.js AI (source-diff): Standard CRA webpack bundle for a browser playground; minification is expected, not malicious. ai
source-diff net-exec-file:build/static/js/main.4f702492.js AI (source-diff): React SPA bundle legitimately contains fetch calls and dynamic module loading; no dropper pattern present. ai
source-diff net-exec-file:build/static/js/main.8bf2a014.js AI (source-diff): Network calls + dynamic module loading are normal in a bundled React dapp; no dropper indicators in sampled code. ai
source-diff obfuscated-file:build/static/js/main.8bf2a014.js AI (source-diff): Standard CRA webpack bundle; minification is expected for this browser playground package. ai

Versions (showing 15 of 15)

Version Deps Published
0.8.1 0 / 51
0.8.0 0 / 51
0.7.5 0 / 51
0.7.4 0 / 51
0.7.3 0 / 51
0.7.2 0 / 51
0.7.1 0 / 51
0.7.0 0 / 51
0.6.6 0 / 51
0.6.5 0 / 51
0.6.4 0 / 51
0.6.3 0 / 51
0.6.2 0 / 51
0.6.1 0 / 51
0.6.0 0 / 51

v0.8.1

4 findings
HIGH Publisher changed: metamaskbot → GitHub Actions (on 2026-06-11) provenance

This version was published by a different npm account than previous versions on 2026-06-11. This could indicate a legitimate maintainer transition or an account compromise.

HIGH New obfuscated file: build/static/js/main.6a70c790.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New file with network + code execution: build/static/js/main.6a70c790.js source-diff

Newly added file contains both network calls and dynamic code execution. This is a hallmark of dropper/loader malware.

INFO Has SLSA provenance attestation provenance

Published via CI/CD with Sigstore attestation (predicate: https://slsa.dev/provenance/v1). This is the strongest supply chain integrity signal.

v0.8.0

3 findings
HIGH New obfuscated file: build/static/js/main.1ec9cd95.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New file with network + code execution: build/static/js/main.1ec9cd95.js source-diff

Newly added file contains both network calls and dynamic code execution. This is a hallmark of dropper/loader malware.

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v0.7.5

3 findings
HIGH New obfuscated file: build/static/js/main.ddd1d44e.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New file with network + code execution: build/static/js/main.ddd1d44e.js source-diff

Newly added file contains both network calls and dynamic code execution. This is a hallmark of dropper/loader malware.

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v0.7.4

6 findings
HIGH New obfuscated file: build/static/js/127.6f28ac63.chunk.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New obfuscated file: build/static/js/288.51cc5192.chunk.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New obfuscated file: build/static/js/921.58d10f34.chunk.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New obfuscated file: build/static/js/main.5a1e472c.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New file with network + code execution: build/static/js/main.5a1e472c.js source-diff

Newly added file contains both network calls and dynamic code execution. This is a hallmark of dropper/loader malware.

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v0.7.3

6 findings
HIGH New obfuscated file: build/static/js/127.6f28ac63.chunk.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New obfuscated file: build/static/js/288.51cc5192.chunk.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New obfuscated file: build/static/js/921.58d10f34.chunk.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New obfuscated file: build/static/js/main.31e1a1d6.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New file with network + code execution: build/static/js/main.31e1a1d6.js source-diff

Newly added file contains both network calls and dynamic code execution. This is a hallmark of dropper/loader malware.

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v0.7.2

6 findings
HIGH New obfuscated file: build/static/js/127.6f28ac63.chunk.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New obfuscated file: build/static/js/288.51cc5192.chunk.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New obfuscated file: build/static/js/921.58d10f34.chunk.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New obfuscated file: build/static/js/main.11fdc90f.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New file with network + code execution: build/static/js/main.11fdc90f.js source-diff

Newly added file contains both network calls and dynamic code execution. This is a hallmark of dropper/loader malware.

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v0.7.1

6 findings
HIGH New obfuscated file: build/static/js/127.6f28ac63.chunk.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New obfuscated file: build/static/js/288.51cc5192.chunk.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New obfuscated file: build/static/js/921.58d10f34.chunk.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New obfuscated file: build/static/js/main.2f01c3f9.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New file with network + code execution: build/static/js/main.2f01c3f9.js source-diff

Newly added file contains both network calls and dynamic code execution. This is a hallmark of dropper/loader malware.

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v0.7.0

1 finding
LOW No provenance attestation provenance

Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.

v0.6.6

4 findings
HIGH New obfuscated file: build/static/js/29.8d088763.chunk.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New obfuscated file: build/static/js/main.8cb80a7d.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New file with network + code execution: build/static/js/main.8cb80a7d.js source-diff

Newly added file contains both network calls and dynamic code execution. This is a hallmark of dropper/loader malware.

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v0.6.5

3 findings
HIGH New obfuscated file: build/static/js/main.4f702492.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New file with network + code execution: build/static/js/main.4f702492.js source-diff

Newly added file contains both network calls and dynamic code execution. This is a hallmark of dropper/loader malware.

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v0.6.4

3 findings
HIGH New obfuscated file: build/static/js/main.68735b63.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New file with network + code execution: build/static/js/main.68735b63.js source-diff

Newly added file contains both network calls and dynamic code execution. This is a hallmark of dropper/loader malware.

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v0.6.3

3 findings
HIGH New obfuscated file: build/static/js/main.8bf2a014.js source-diff

Newly added source file contains lines over 3000 chars, suggesting minified or obfuscated code. New obfuscated files are a strong attack indicator.

HIGH New file with network + code execution: build/static/js/main.8bf2a014.js source-diff

Newly added file contains both network calls and dynamic code execution. This is a hallmark of dropper/loader malware.

LOW No provenance attestation provenance

Package was published without Sigstore provenance. Consider requesting the maintainer enable provenance via CI/CD.

v0.6.2

1 finding
LOW No provenance attestation provenance

Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.

v0.6.1

1 finding
LOW No provenance attestation provenance

Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.

v0.6.0

1 finding
LOW No provenance attestation provenance

Package was published without Sigstore provenance. Only ~12% of npm packages have provenance, so this is common but not ideal.