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@mescius/spread-sheets-io

9
Versions
License
No
Install Scripts
Missing
Provenance

Supply chain provenance

Status for the latest visible version.

No SLSA provenance npm registry signatures No source commit

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

mescius

Keywords

spread-sheets-iospreadjs-iojavascript spreadsheetjavascript exceliospreadsheetjavascriptexcelmescius

Accepted risks

Findings the reviewer chose to accept rather than block on.

SourceRuleReasonAccepted byWhen
source-diff encoded-string-file:dist/gc.spread.sheets.io.min.js AI (source-diff): Minified commercial library; long strings are normal for SpreadJS dist bundles. ai
publish-pattern dormant-publish AI (publish-pattern): Major version release cadence for commercial SDK; dormancy is normal. ai
bogus-package bogus-package AI (bogus-package): Commercial SDK plugin; empty index.js and link-heavy README are standard for this package. ai

Versions (showing 9 of 9)

Version Deps Published
19.1.1 1 / 0
19.1.0 1 / 0
19.0.6 1 / 0
19.0.5 1 / 0
19.0.4 1 / 0
19.0.3 1 / 0
19.0.2 1 / 0
19.0.1 1 / 0
19.0.0 1 / 0

v19.1.1

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.

v19.1.0

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.

v19.0.6

2 findings
HIGH Long encoded string in modified file: dist/gc.spread.sheets.io.min.js source-diff

Modified file contains 5 long encoded string(s) (200+ chars). These are commonly used to hide malicious payloads.

LOW No provenance attestation provenance

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

v19.0.5

2 findings
HIGH Long encoded string in modified file: dist/gc.spread.sheets.io.min.js source-diff

Modified file contains 5 long encoded string(s) (200+ chars). These are commonly used to hide malicious payloads.

LOW No provenance attestation provenance

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

v19.0.4

2 findings
HIGH Long encoded string in modified file: dist/gc.spread.sheets.io.min.js source-diff

Modified file contains 5 long encoded string(s) (200+ chars). These are commonly used to hide malicious payloads.

LOW No provenance attestation provenance

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

v19.0.3

2 findings
HIGH Long encoded string in modified file: dist/gc.spread.sheets.io.min.js source-diff

Modified file contains 5 long encoded string(s) (200+ chars). These are commonly used to hide malicious payloads.

LOW No provenance attestation provenance

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

v19.0.2

2 findings
HIGH Long encoded string in modified file: dist/gc.spread.sheets.io.min.js source-diff

Modified file contains 5 long encoded string(s) (200+ chars). These are commonly used to hide malicious payloads.

LOW No provenance attestation provenance

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

v19.0.1

2 findings
HIGH Long encoded string in modified file: dist/gc.spread.sheets.io.min.js source-diff

Modified file contains 5 long encoded string(s) (200+ chars). These are commonly used to hide malicious payloads.

LOW No provenance attestation provenance

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

v19.0.0

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.