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@metamask/kernel-browser-runtime

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Tools for running the MetaMask Ocap Kernel in a web browser

6
Versions
(MIT OR Apache-2.0)
License
No
Install Scripts
Missing
Provenance

Supply chain provenance

Status for the latest visible version.

No SLSA provenance npm registry signatures gitHead linked

Without SLSA provenance there is no cryptographic link between this tarball and the public source — the axios compromise (March 2026) relied on exactly this gap.

Maintainers

danfinlaykumavismetamaskbotgudahtt

Keywords

MetaMaskobject capabilitiesocap

Accepted risks

Findings the reviewer chose to accept rather than block on.

SourceRuleReasonAccepted byWhen
source-diff obfuscated-file:dist/static/sqlite3-opfs-async-proxy-C_otN2ZJ.js AI (source-diff): Known sqlite-wasm OPFS async proxy worker bundle; minified by design, not malicious. ai
phantom-deps phantom-dep:@metamask/kernel-store AI (phantom-deps): Same-org dep; phantom-dep heuristic fires on indirect usage patterns common in monorepo packages. ai
phantom-deps phantom-dep:@metamask/json-rpc-engine AI (phantom-deps): Same-org dep; stable false positive for this monorepo package. ai
phantom-deps phantom-dep:@metamask/kernel-platforms AI (phantom-deps): Same-org dep; stable false positive for this monorepo package. ai

Versions (showing 6 of 6)

Version Deps Published
0.6.0 16 / 33
0.5.0 16 / 33
0.4.0 15 / 31
0.3.0 15 / 31
0.2.0 15 / 32
0.1.0 15 / 32

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.

v0.5.0

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.

v0.4.0

2 findings
HIGH New obfuscated file: dist/static/sqlite3-opfs-async-proxy-C_otN2ZJ.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.

LOW No provenance attestation provenance

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

v0.3.0

2 findings
HIGH New obfuscated file: dist/static/sqlite3-opfs-async-proxy-C_otN2ZJ.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.

LOW No provenance attestation provenance

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

v0.2.0

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.

v0.1.0

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.