bare-zlib — Greenflagged

Supply chain provenance

Status for the latest visible version.

SLSA provenance attestation npm registry signatures gitHead linked

Maintainers

mafintosh

Accepted risks

Findings the reviewer chose to accept rather than block on.

Source	Rule	Reason	Accepted by	When
npm-metadata	bundled-binaries	AI (npm-metadata): Native zlib addon; prebuilt .bare binaries for multiple platforms are the documented distribution mechanism for Holepunch addons.	ai	2026/05/23

Versions (showing 5 of 5)

Version	Deps	Published
1.4.0	1 / 7	2026-06-02
1.3.4	1 / 7	2026-05-29
1.3.3	1 / 7	2026-04-05
1.3.1	1 / 6	2025-08-21
1.3.0	1 / 6	2025-05-22

v1.4.0

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.

v1.3.4

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.

v1.3.1

2 findings

HIGH Bundled binary files (13) npm-metadata

Package contains compiled binaries that could be backdoors: • prebuilds/android-arm/bare-zlib.bare • prebuilds/android-arm64/bare-zlib.bare • prebuilds/android-ia32/bare-zlib.bare • prebuilds/android-x64/bare-zlib.bare • prebuilds/darwin-arm64/bare-zlib.bare • prebuilds/darwin-x64/bare-zlib.bare • prebuilds/ios-arm64-simulator/bare-zlib.bare • prebuilds/ios-arm64/bare-zlib.bare • prebuilds/ios-x64-simulator/bare-zlib.bare • prebuilds/linux-arm64/bare-zlib.bare ... and 3 more

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.

v1.3.0

2 findings

HIGH Bundled binary files (13) npm-metadata

Package contains compiled binaries that could be backdoors: • prebuilds/android-arm/bare-zlib.bare • prebuilds/android-arm64/bare-zlib.bare • prebuilds/android-ia32/bare-zlib.bare • prebuilds/android-x64/bare-zlib.bare • prebuilds/darwin-arm64/bare-zlib.bare • prebuilds/darwin-x64/bare-zlib.bare • prebuilds/ios-arm64-simulator/bare-zlib.bare • prebuilds/ios-arm64/bare-zlib.bare • prebuilds/ios-x64-simulator/bare-zlib.bare • prebuilds/linux-arm64/bare-zlib.bare ... and 3 more

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.