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web-ext

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6
Versions
—
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

addons-robot

Keywords

webextensionsweb extensionsbrowser extensionsfirefoxmozillaadd-onsgooglechromeopera

Accepted risks

Findings the reviewer chose to accept rather than block on.

SourceRuleReasonAccepted byWhen
semgrep semgrep:env-spread AI (semgrep): Intentional: web-ext passes process.env to Firefox subprocess; standard pattern for browser launchers. ai
phantom-deps phantom-dep:@babel/runtime AI (phantom-deps): Babel runtime is a legitimate transitive/convention dependency for Babel-compiled packages. ai
phantom-deps phantom-dep:source-map-support AI (phantom-deps): Referenced in config files as documented; stable false positive for this package. ai

Versions (showing 6 of 6)

Version Deps Published
10.3.0 26 / 33
10.2.0 26 / 33
10.1.0 27 / 33
10.0.0 27 / 33
9.4.0 27 / 33
9.3.0 27 / 33

v10.3.0

1 finding
LOW No provenance attestation provenance

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

v10.2.0

2 findings
HIGH env-spread: lib/firefox/index.js:66 semgrep

Spreading entire process.env into an object — may capture all secrets Source: https://github.com/mozilla/web-ext/blob/cc3854d91e9a9160dba743e4a36832794c549bad/lib/firefox/index.js#L66 64 | foreground: true, 65 | profile: profile.path(), > 66 | env: { 67 | ...process.env, 68 | ...defaultFirefoxEnv

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.

v10.1.0

1 finding
LOW No provenance attestation provenance

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

v10.0.0

2 findings
HIGH env-spread: lib/firefox/index.js:66 semgrep

Spreading entire process.env into an object — may capture all secrets Source: https://github.com/mozilla/web-ext/blob/97fbb93c0309a9bc280c7331ed8da001455f1744/lib/firefox/index.js#L66 64 | foreground: true, 65 | profile: profile.path(), > 66 | env: { 67 | ...process.env, 68 | ...defaultFirefoxEnv

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.

v9.4.0

1 finding
LOW No provenance attestation provenance

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

v9.3.0

2 findings
HIGH env-spread: lib/firefox/index.js:66 semgrep

Spreading entire process.env into an object — may capture all secrets Source: https://github.com/mozilla/web-ext/blob/278002d5af78e445287b397b661c2d3bd7a945f4/lib/firefox/index.js#L66 64 | foreground: true, 65 | profile: profile.path(), > 66 | env: { 67 | ...process.env, 68 | ...defaultFirefoxEnv

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.