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Security Deep Dive

steel-browser

Security posture and CVE patch evidence from tracked releases.

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1 critical dependency CVE affects v0.5.3-beta.

Audit transitive dependencies; consider upgrading or pinning replacements.

— Signed — SLSA ✓ SBOM ✗ Security policy Unknown cadence Active maintainer

Trust Signals — 2 of 9 Present

Evidence already collected from releases and repository metadata.

2/9 Present
Signed releases Unknown
Latest release artifact signature Latest release
SLSA provenance Unknown
Attestation predicate level Latest release
SBOM published Present
GitHub SBOM API Latest release
Last verified: 28d ago
SECURITY.md Absent
GitHub repository metadata Repository policy
Checked: 21d ago
Release cadence Unknown
12-release median Release history
Latest release: 1mo ago
Maintainer active Present
Recent commit activity Repository
Last commit: 12d ago
Checksums (SHA256SUMS) Not active yet
SHA256SUMS or equivalent Release asset
Latest release: 1mo ago
GitHub Actions attestation Not active yet
actions/attest-build-provenance Workflow file
Latest release: 1mo ago
Signing assets Not active yet
.sig, .crt, cosign.pub, or similar Release asset
Latest release: 1mo ago
3.8/10 Security Score
Dependency Exposure 27 transitive dependency CVEs found in the latest SBOM. 1 critical.

Security Score

A composite score aggregating Scorecard performance, CVE patch history, OpenSSF badge tier, and dependency vulnerability exposure. Score ≥ 7.0 is healthy; < 4.0 warrants attention.

epss

0.25 / 0.5

No EPSS data

freshness

1.00 / 1.0

12d stale

scorecard

2.00 / 4.0

⚠ Estimated — not yet collected

cve health

0.00 / 2.5

⚠ No direct scan — 2c/26h transitive CVEs

patch speed

0.50 / 0.5

⚠ Estimated — no CVE patch history

kev exposure

1.50 / 1.5

No KEV exposure

supply chain risk

-1.50 / 10.0

Risk 61.1/100

Score breakdown

schema v2

Vulnerability posture

vulnerability posture

0.0

25%

direct cves: clear cve scan: estimated

Release responsiveness

release responsiveness

10.0

5%

patch speed days: no_history

Dependency exposure

dependency exposure

3.9

10%

supply chain risk: 61.06 transitive cves: 2c/26h

Provenance trust

provenance trust

5.0

40%

scorecard score: estimated openssf badge: none

Maintainer health

maintainer health

10.0

10%

activity freshness: 12d

Operational risk

operational risk

8.5

10%

kev exposure: clear epss max: none
How is this calculated?

The six dimensions group the legacy score signals into weighted categories: direct vulnerability status, patch responsiveness, dependency exposure, provenance checks, maintainer activity, and exploitability risk. The flat component values above remain available for compatibility.

Supply Chain Risk

Risk 61.1/100
1 Transitive critical CVEs
0 KEV-transitive CVEs
47% Dependency freshness

OpenSSF Badge

OpenSSF none

Badge indicates adherence to open-source best practices.

Dependency Vulnerabilities

1479 dependencies scanned View full dependency list →

Scanning the SBOM (Software Bill of Materials) of the latest release for known vulnerabilities in transitive dependencies.

Critical

1

High

17

Medium

5

Low

4

Unknown

0

Critical 1 High 17 Medium 5 Low 4
CVE Severity KEV Dependency Affected version Cleared in release
CVE-2026-33937 critical handlebars 4.7.8
CVE-2026-23745 high tar 6.2.1
CVE-2026-23950 high tar 6.2.1
CVE-2026-24842 high tar 6.2.1
CVE-2026-26960 high tar 6.2.1
CVE-2026-26996 high minimatch 9.0.3
CVE-2026-27903 high minimatch 9.0.3
CVE-2026-27904 high minimatch 9.0.3
CVE-2026-29786 high tar 6.2.1
CVE-2026-31802 high tar 6.2.1
CVE-2026-33938 high handlebars 4.7.8
CVE-2026-33939 high handlebars 4.7.8
CVE-2026-33940 high handlebars 4.7.8
CVE-2026-33941 high handlebars 4.7.8
CVE-2026-44240 high basic-ftp 5.3.0
CVE-2026-6321 high fast-uri 3.0.6
CVE-2026-6322 high fast-uri 3.0.6
GHSA-5c6j-r48x-rmvq high serialize-javascript 6.0.2
CVE-2025-69873 medium ajv 8.17.1
CVE-2026-33916 medium handlebars 4.7.8
CVE-2026-34043 medium serialize-javascript 6.0.2
CVE-2026-42338 medium ip-address 10.0.1
GHSA-7rx3-28cr-v5wh medium handlebars 4.7.8
CVE-2025-68157 low webpack 5.97.1
CVE-2025-68458 low webpack 5.97.1
CVE-2026-3449 low @tootallnate/once 2.0.0
GHSA-442j-39wm-28r2 low handlebars 4.7.8

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