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cssnano

A modular minifier, built on top of the PostCSS ecosystem.

30
Versions
MIT
License
No
Install Scripts
Verified
Provenance

Supply chain provenance

Status for the latest visible version.

SLSA provenance attestation npm registry signatures No source commit

Maintainers

benebludovicofischeraichriseppsteinjonathantnealandyjanssonevilebottnawicssnano-bot

Keywords

csscompressminifyoptimiseoptimisationpostcsspostcss-plugin

Accepted risks

Findings the reviewer chose to accept rather than block on.

SourceRuleReasonAccepted byWhen
provenance publisher-changed AI (provenance): cssnano moved to GitHub Actions CI/CD publishing with SLSA provenance; this is a security improvement, not a takeover. ai
publish-pattern dormant-publish AI (publish-pattern): Dormancy is relative to last vetted version (v4); cssnano has been actively publishing v5-v7 in the interim. ai
publish-pattern new-deps-added AI (publish-pattern): lilconfig replaces cosmiconfig — a well-known lightweight config loader swap in the ecosystem. ai
bogus-package bogus-package AI (bogus-package): cssnano is a mature, well-known CSS minifier. Inflated semver and short README signals are false positives — v7.1.7 reflects the package's actual version history, not inflation. ai
semgrep semgrep:dynamic-require AI (semgrep): Dynamic require is cssnano's documented preset-loading mechanism, allowing users to specify custom presets by name. This is a core feature, not a security risk. ai

Versions (showing 30 of 30)

Version Deps Published
8.0.1 2 / 4
8.0.0 2 / 4
7.1.9 2 / 4
7.1.8 2 / 4
7.1.7 2 / 4
7.1.6 2 / 4
7.1.5 2 / 4
7.1.4 2 / 4
7.1.3 2 / 4
7.1.2 2 / 4
7.1.1 2 / 4
7.1.0 2 / 4
7.0.7 2 / 4
7.0.6 2 / 4
7.0.5 2 / 4
7.0.4 2 / 4
7.0.3 2 / 4
7.0.2 2 / 4
7.0.1 2 / 4
7.0.0 2 / 4
6.1.2 2 / 4
6.1.1 2 / 4
6.1.0 2 / 4
6.0.5 2 / 4
6.0.4 2 / 4
6.0.3 2 / 4
6.0.2 2 / 4
6.0.1 2 / 4
6.0.0 2 / 4
4.1.10 4 / 9

v8.0.1

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.

v8.0.0

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.

v7.1.9

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.

v7.1.8

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.

v7.1.6

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.

v7.1.5

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.

v7.1.4

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.

v7.1.3

2 findings
HIGH Publisher changed: evilebottnawi → GitHub Actions (on 2026-03-06) provenance

This version was published by a different npm account than previous versions on 2026-03-06. 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.

v7.1.2

2 findings
HIGH Publisher changed: evilebottnawi → GitHub Actions (on 2025-10-29) provenance

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.

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.

v7.1.1

2 findings
HIGH Publisher changed: evilebottnawi → ludovicofischer (on 2025-08-22) provenance

This version was published by a different npm account than previous versions on 2025-08-22. This could indicate a legitimate maintainer transition or an account compromise.

LOW No provenance attestation provenance

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

v7.1.0

2 findings
HIGH Publisher changed: evilebottnawi → ludovicofischer (on 2025-07-14) provenance

This version was published by a different npm account than previous versions on 2025-07-14. This could indicate a legitimate maintainer transition or an account compromise.

LOW No provenance attestation provenance

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

v7.0.7

2 findings
HIGH Publisher changed: evilebottnawi → ludovicofischer (on 2025-05-06) provenance

This version was published by a different npm account than previous versions on 2025-05-06. This could indicate a legitimate maintainer transition or an account compromise.

LOW No provenance attestation provenance

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

v7.0.6

2 findings
HIGH Publisher changed: evilebottnawi → ludovicofischer (on 2024-09-04) provenance

This version was published by a different npm account than previous versions on 2024-09-04. This could indicate a legitimate maintainer transition or an account compromise.

LOW No provenance attestation provenance

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

v7.0.5

2 findings
HIGH Publisher changed: evilebottnawi → ludovicofischer (on 2024-08-09) provenance

This version was published by a different npm account than previous versions on 2024-08-09. This could indicate a legitimate maintainer transition or an account compromise.

LOW No provenance attestation provenance

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

v7.0.4

2 findings
HIGH Publisher changed: evilebottnawi → ludovicofischer (on 2024-07-05) provenance

This version was published by a different npm account than previous versions on 2024-07-05. This could indicate a legitimate maintainer transition or an account compromise.

LOW No provenance attestation provenance

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

v7.0.3

2 findings
HIGH Publisher changed: evilebottnawi → ludovicofischer (on 2024-06-19) provenance

This version was published by a different npm account than previous versions on 2024-06-19. This could indicate a legitimate maintainer transition or an account compromise.

LOW No provenance attestation provenance

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

v7.0.2

2 findings
HIGH Publisher changed: evilebottnawi → ludovicofischer (on 2024-06-05) provenance

This version was published by a different npm account than previous versions on 2024-06-05. This could indicate a legitimate maintainer transition or an account compromise.

LOW No provenance attestation provenance

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

v7.0.1

2 findings
HIGH Publisher changed: evilebottnawi → ludovicofischer (on 2024-04-26) provenance

This version was published by a different npm account than previous versions on 2024-04-26. This could indicate a legitimate maintainer transition or an account compromise.

LOW No provenance attestation provenance

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

v7.0.0

2 findings
HIGH Publisher changed: evilebottnawi → ludovicofischer (on 2024-04-24) provenance

This version was published by a different npm account than previous versions on 2024-04-24. This could indicate a legitimate maintainer transition or an account compromise.

LOW No provenance attestation provenance

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

v6.1.2

1 finding
LOW No provenance attestation provenance

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

v6.1.1

1 finding
LOW No provenance attestation provenance

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

v6.1.0

1 finding
LOW No provenance attestation provenance

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

v6.0.5

1 finding
LOW No provenance attestation provenance

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

v6.0.4

1 finding
LOW No provenance attestation provenance

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

v6.0.3

1 finding
LOW No provenance attestation provenance

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

v6.0.2

1 finding
LOW No provenance attestation provenance

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

v6.0.1

1 finding
LOW No provenance attestation provenance

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

v6.0.0

2 findings
LOW No provenance attestation provenance

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

INFO Publisher changed: evilebottnawi → ludovicofischer (on 2023-03-27) provenance

[Accepted risk] This version was published by a different npm account than previous versions on 2023-03-27. This could indicate a legitimate maintainer transition or an account compromise.

v4.1.10

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.