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workerd

25
Versions
License
Yes
Install Scripts
Verified
Provenance

Supply chain provenance

Status for the latest visible version.

SLSA provenance attestation npm registry signatures gitHead linked

Maintainers

wrangler-publisher

Accepted risks

Findings the reviewer chose to accept rather than block on.

SourceRuleReasonAccepted byWhen
provenance publisher-changed AI (provenance): Migration from wrangler-publisher to GitHub Actions is a legitimate CI/CD transition, confirmed by SLSA provenance from cloudflare/workerd repo. ai
publish-pattern dormant-publish AI (publish-pattern): workerd uses date-based versioning and publishes in bursts aligned with Cloudflare release cycles; dormancy gaps are expected and SLSA provenance attestation confirms CI/CD publishing integrity. ai
install-scripts install-script:postinstall AI (install-scripts): workerd uses postinstall to select and install the correct platform-specific prebuilt binary — a documented, standard pattern for this package. ai
semgrep semgrep:env-spread AI (semgrep): Spreading process.env when spawning a child npm process is standard practice; the explicit npm_config_global override is a safety measure, not exfiltration. ai
semgrep semgrep:child-process-import AI (semgrep): child_process is used to spawn npm as a fallback binary installer — expected and legitimate for a binary distribution package. ai
bogus-package bogus-package AI (bogus-package): workerd is Cloudflare's official runtime; cosmetic README/keyword signals are irrelevant for this well-known infrastructure package. ai

Versions (showing 25 of 25)

Version Deps Published
1.20260522.1 0 / 0
1.20260521.1 0 / 0
1.20260519.1 0 / 0
1.20260518.1 0 / 0
1.20260517.1 0 / 0
1.20260516.1 0 / 0
1.20260515.1 0 / 0
1.20260514.1 0 / 0
1.20260511.1 0 / 0
1.20260510.1 0 / 0
1.20260509.1 0 / 0
1.20260507.1 0 / 0
1.20260506.1 0 / 0
1.20260503.1 0 / 0
1.20260502.1 0 / 0
1.20260430.1 0 / 0
1.20260426.1 0 / 0
1.20260425.1 0 / 0
1.20260424.1 0 / 0
1.20260408.1 0 / 0
1.20260329.1 0 / 0
1.20251216.0 0 / 0
1.20251029.0 0 / 0
1.20250424.0 0 / 0
1.20241230.0 0 / 0

v1.20260522.1

1 finding
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.

v1.20260521.1

1 finding
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.

v1.20260519.1

1 finding
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.

v1.20260518.1

1 finding
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.

v1.20260517.1

1 finding
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.

v1.20260516.1

1 finding
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.

v1.20260515.1

1 finding
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.

v1.20260514.1

1 finding
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.

v1.20260511.1

1 finding
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.

v1.20260510.1

1 finding
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.

v1.20260509.1

1 finding
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.

v1.20260507.1

1 finding
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.

v1.20260506.1

1 finding
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.

v1.20260503.1

1 finding
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.

v1.20260502.1

1 finding
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.

v1.20260430.1

1 finding
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.

v1.20260426.1

1 finding
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.

v1.20260425.1

1 finding
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.

v1.20260424.1

3 findings
HIGH Package has 'postinstall' script install-scripts

Script: node install.js

HIGH env-spread: install.js:148 semgrep

Spreading entire process.env into an object — may capture all secrets Source: https://github.com/cloudflare/workerd/blob/c63bb6eb1bd72ec5b0a9477f91041d279d1d017d/install.js#L148 146 | } 147 | function installUsingNPM(pkg, subpath, binPath) { > 148 | const env = { ...process.env, npm_config_global: void 0 }; 149 | const libDir = import_path2.default.dirname(require.resolve("workerd")); 150 | const installDir = import_path2.default.join(libDir, "npm-install");

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.

v1.20260408.1

2 findings
HIGH Publisher changed: wrangler-publisher → GitHub Actions (on 2026-04-08) provenance

This version was published by a different npm account than previous versions on 2026-04-08. This could indicate a legitimate maintainer transition or an account compromise.

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.

v1.20260329.1

2 findings
HIGH Publisher changed: wrangler-publisher → GitHub Actions (on 2026-03-29) provenance

This version was published by a different npm account than previous versions on 2026-03-29. This could indicate a legitimate maintainer transition or an account compromise.

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.

v1.20251216.0

1 finding
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.

v1.20251029.0

2 findings
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.

INFO Publisher changed: wrangler-publisher → GitHub Actions (on 2025-10-29) provenance

[Accepted risk] This version was published by a different npm account than previous versions on 2025-10-29. This could indicate a legitimate maintainer transition or an account compromise.

v1.20250424.0

1 finding
LOW No provenance attestation provenance

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

v1.20241230.0

3 findings
HIGH Package has 'postinstall' script install-scripts

Script: node install.js

HIGH env-spread: install.js:148 semgrep

Spreading entire process.env into an object — may capture all secrets Source: https://github.com/cloudflare/workerd/blob/f37b4c64ddc4b61e6eee541aceea13bd43a05501/install.js#L148 146 | } 147 | function installUsingNPM(pkg, subpath, binPath) { > 148 | const env = { ...process.env, npm_config_global: void 0 }; 149 | const libDir = import_path2.default.dirname(require.resolve("workerd")); 150 | const installDir = import_path2.default.join(libDir, "npm-install");

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.