Public record
Software health reportschema 0.34.0 · metrics 2.10.0 · 2026-09-13 18:24 UTC

ossf / osv-schema

Open Source Vulnerability schema.

Go · PythonApache-2.0★ 271 stars⑂ 127 forkssince Jul 2021View on GitHub ↗
KindCommand-line toolLibraryhow this is determined

ossf/osv-schema holds a health index of 98 out of 100, placing it in the Exceptional band. It scores highest on Security (91/100) and lowest on AI Readiness (67/100). It was last updated 4 days ago. 4 contributors account for most of its recent work.

98
overall / 100
Exceptional

Software health index

Metrics are grouped into weighted categories on one standardized 1–100 scale. Overall starts as their weighted mean, calibrated against the distribution of the public record so bands carry percentile meaning; when public evidence triggers the High-Risk Jurisdiction Policy, the rating is adjusted and receives an At Risk ceiling of 34.

98
Exceptional93-100The record's top tier (≈ top 5%); essentially all checked criteria met
Excellent80-92Strong across the board; minor gaps
Good65-79Healthy; gaps are limited and manageable
Moderate50-64Acceptable with notable gaps; review recommended
Weak35-49Material weaknesses across several areas
At Risk20-34Significant weaknesses; adoption warrants caution
Critical1-19Severe problems (abandoned, single-maintainer, no hygiene)
VitalityCommunity &AdoptionSustainability &GovernanceEngineeringQualitySecurityAI Readiness

Score profile

Each axis is a category. The shape matters more than the average — a healthy subject fills the whole shape, while a spike-and-crater profile means strength in one dimension is masking risk in another.

The weighted overall 87 is calibrated to 98 on the published index scale (record calibration 2026-08-02).

Ownership

Open Source Security Foundation (OpenSSF)Organization · verified domain
2,608 followers81 public repossince Jul 2020

This repository is backed by an organization — shared, accountable stewardship that can outlive any single maintainer.

Package ecosystems

RegistryPackageVersionDownloads / moVersionsLast publish
Gogithub.com/ossf/osv-schemav1.9.0-2038 days ago

Metrics by category

Vitality

Is the project alive — is code being written and are releases shipping?

90Excellent · 21% of overall
How it's scored
36/36Push recency — last push 4 days ago
24.2/36Commit cadence — 35/52 weeks with commits
18/18Commit volume — 125 commits in the last year
10/10OpenSSF Scorecard: Maintained — 30 commit(s) and 1 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year125
human_commit_share0.59
days_since_last_push4
active_weeks_last_year35
How it's scored
27/27Ships releases — 22 releases published
36/36Release recency — latest release 38 days ago
19.8/27Release cadence — a release every ~78 days
0/10OpenSSF Scorecard: Signed-Releases — no data
Inputs used
releases_count22
latest_release_tagv1.9.0
releases_from_tagsno
days_since_latest_release38
mean_days_between_releases78
Excluded from scoring (no data or not applicable): OpenSSF Scorecard: Signed-Releases. Remaining weights renormalized.

Community & Adoption

Does the project have users, downloads, attention, and a welcoming setup for contributors?

74Good · 17% of overall
How it's scored
39.4/60Stars — 271 stars
17.5/25Forks — 127 forks
7.9/15Watchers — 27 watchers
Inputs used
forks127
stars271
watchers27
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

85Excellent
How it's scored
22.5/22.5README
22.5/22.5License — recognized license (Apache-2.0)
18/18CONTRIBUTING guide
13.5/13.5Code of conduct
0/7.2Issue template
0/6.3PR template
Inputs used
has_readmeyes
has_licenseyes
readme_badges0
has_contributingyes
has_issue_templateno
has_code_of_conductyes
readme_badge_services—
has_pull_request_templateno

Sustainability & Governance

Will the project survive its people — bus factor, responsiveness, who backs it, and package upkeep?

90Excellent · 23% of overall
How it's scored
43.2/54Bus factor — 4 contributor(s) cover half of all commits
17.1/22.5Commit distribution — top contributor authored 24% of commits
13.5/13.5Contributor breadth — 70 contributors
10/10OpenSSF Scorecard: Contributors — project has 11 contributing companies or organizations
Inputs used
bus_factor4
contributors_sampled70
top_contributor_share0.24
How it's scored
26.9/42Issue resolution — 64% of issues closed
26.2/30PR acceptance — 381/437 decided PRs merged
13/13Newcomer PR acceptance — 1/1 first-time contributors' PRs merged in 30d
15/15OpenSSF Scorecard: Code-Review — all changesets reviewed
Inputs used
merged_prs381
open_issues52
closed_issues93
prs_merged_7d0
prs_decided_7d0
prs_merged_30d3
prs_decided_30d3
issue_closed_ratio0.641
closed_unmerged_prs56
first_time_authors_30d1
first_time_prs_merged_30d1
first_time_prs_decided_30d1
How it's scored
30/30Ownership backing — organization-owned
20/20Verified domain
24.6/25Owner reach — 2,608 followers of ossf
25/25Track record — 81 public repos, account ~6 yr old
Inputs used
followers2,608
owner_typeOrganization
is_verifiedyes
owner_loginossf
public_repos81
account_age_days2,265

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable — 1 package(s) on go
35/35Publish recency — latest publish 38 days ago
20/20Version history — 20 published versions
20/20Not deprecated — active, not deprecated or yanked
Inputs used
packagesgithub.com/ossf/osv-schema
ecosystemsgo
any_deprecatedno
min_days_since_publish38

Engineering Quality

Are baseline engineering and documentation practices in place?

90Excellent · 19% of overall
How it's scored
24/24CI workflows — 3 workflow(s)
24/24Tests present
16/16Linter config — .pylintrc
0/9.6Pre-commit hooks
6.4/6.4.editorconfig
20/20OpenSSF Scorecard: CI-Tests — 30 out of 30 merged PRs checked by a CI test -- score normalized to 10
Inputs used
has_ciyes
has_testsyes
has_editorconfigyes
has_linter_configyes
has_precommit_configno

Documentation

90Excellent
How it's scored
30/30README
25/25Documentation directory
15/15Documentation / homepage site — https://ossf.github.io/osv-schema/
10/10Repository description
0/10Topics
10/10Wiki
Inputs used
topics—
has_wikiyes
homepagehttps://ossf.github.io/osv-schema/
docs_sitehttps://ossf.github.io/osv-schema/
has_readmeyes
has_docs_diryes
has_descriptionyes

Security

Are visible security and supply-chain practices strong, without unresolved high-risk jurisdiction exposure?

91Excellent · 16% of overall

Security posture

89Excellent
How it's scored
7.5/7.5Binary-Artifacts — no binaries found in the repo
0/7.5Branch-Protection — no data
2.5/2.5CI-Tests — 30 out of 30 merged PRs checked by a CI test -- score normalized to 10
0/2.5CII-Best-Practices — no effort to earn an OpenSSF best practices badge detected
7.5/7.5Code-Review — all changesets reviewed
2.5/2.5Contributors — project has 11 contributing companies or organizations
10/10Dangerous-Workflow — no dangerous workflow patterns detected
7.5/7.5Dependency-Update-Tool — update tool detected
0/5Fuzzing — project is not fuzzed
2.5/2.5License — license file detected
7.5/7.5Maintained — 30 commit(s) and 1 issue activity found in the last 90 days -- score normalized to 10
0/5Packaging — no data
3.5/5Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 7
5/5SAST — SAST tool is run on all commits
5/5Security-Policy — security policy file detected
0/7.5Signed-Releases — no data
6.8/7.5Token-Permissions — detected GitHub workflow tokens with excessive permissions
7.5/7.5Vulnerabilities — 0 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated15
scorecard_versionv5.5.0
checks_inconclusive3
scorecard_aggregate8.9
Excluded from scoring (no data or not applicable): Branch-Protection, Packaging, Signed-Releases. Remaining weights renormalized.

Dependency advisories

100Exceptional
How it's scored
35/35Direct dependencies free of known advisories — no direct dependency carries a known advisory
0/25Indirect dependencies free of known advisories — transitive set not separable from development and test dependencies in this scope
0/40No advisories left outstanding — no advisory carries a publication date
Inputs used
sourceosv
advisories0
affected_packages0
assessed_packages181
unassessed_packages3
affected_by_severitynone
direct_affected_packages0
Excluded from scoring (no data or not applicable): Indirect dependencies free of known advisories, No advisories left outstanding. Remaining weights renormalized. Matched 181 resolved dependencies against OSV. 3 could not be assessed — no resolved version, an unsupported ecosystem, or beyond the reported package list. This repository publishes no package the index resolves, so the repository dependency graph was assessed instead. That graph mixes development and test pins with shipped dependencies, so only the declared runtime dependencies are scored; transitive findings are reported as context and excluded from the score. Reachability is not analyzed.

AI Readiness

How well is the repo equipped to be developed and maintained with AI coding agents? Carries a deliberately small weight (4%): agent tooling is a real maintenance signal, but a repository with none can still reach 100/100.

67Good · 4% of overall
How it's scored
0/45Agent instructions — no CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
40/40Legible commit history — 59 of 59 human commits state their intent (structured subject or explanatory body)
Inputs used
has_llms_txtno
llms_txt_url—
legible_history_share1
agent_instruction_files—
agent_instruction_max_bytes—
How it's scored
12.6/18One-command bootstrap — bindings/go/go.mod, tools/osv-linter/go.mod (toolchain convention, no task runner)
22/22Automated tests
11/11Lint / format config — .pylintrc
11/11Static type checking — Go (statically typed)
10/10Reproducible environment — lockfile
0/10Demonstrated agent practice — no agent-authored commits among the last 100
8/8Automated maintenance — 41 of the last 100 commits are automated dependency updates
7/10OpenSSF Scorecard: Pinned-Dependencies — dependency not pinned by hash detected -- score normalized to 7
Inputs used
has_nixno
has_testsyes
lockfilesGemfile.lock, Pipfile.lock, go.sum
has_dockerfileno
typed_languageyes
bootstrap_files—
has_devcontainerno
has_linter_configyes
typecheck_configs—
agent_commit_share0
toolchain_manifestsbindings/go/go.mod, tools/osv-linter/go.mod
dependency_bot_commit_share0.41
How it's scored
45/45Type-checkable code — Go (statically typed)
55/55Manageable file sizes — 0/36 source files over 60KB
Inputs used
primary_languageGo
largest_source_bytes39,662
source_files_sampled36
oversized_source_files0
How it's scored
40/40API schema (OpenAPI/GraphQL/proto) — proto/vulnerability.proto
0/20MCP server — not applicable to this kind of software
0/40Runnable examples
Inputs used
example_dirs—
has_mcp_signalno
api_schema_filesproto/vulnerability.proto
interfaces_expected_of—
Excluded from scoring (no data or not applicable): MCP server. Remaining weights renormalized.

Key facts

271GitHub stars
70contributors
125commits, last 12 months
4days since last push
22releases
4bus factor
52open issues
RubyGemspackage ecosystems

Data collection warnings

  • Star history unavailable: GitHub GraphQL error: Resource not accessible by personal access token
  • Could not fetch pypi package 'redhat_osv' from its registry

More detail

Star and fork history 0 ★ / 127 ⇿
0Stars
127Forks
21Releases

When each star and fork was added, collected from GitHub and bucketed by day. Cumulative growth sits directly above the daily additions it is made of, so the two read against each other: steady organic accretion looks nothing like an abrupt, short-lived burst. Where that difference is measurable, it is reported as growth authenticity.

025507510012512132021-092024-032026-09
Major 1Minor 8Patch 12

Each point covers 5 days.

OpenSSF Scorecard 8.9 / 10
8.9aggregate

Independent, tool-agnostic security assessment from the open-source OpenSSF Scorecard. Each check rewards a security practice, not a specific vendor's tool. Checks Scorecard could not determine are marked n/a and excluded from the security score (never counted as zero).Scorecard v5.5.0 · 2026-09-13 18:23 UTC

10Binary-Artifactsno binaries found in the repo
n/aBranch-Protectioninternal error: error during branchesHandler.setup: internal error: some github tokens can't read classic branch protection rules: https://github.com/ossf/scorecard-action/blob/main/docs/authentication/fine-grained-auth-token.md
10CI-Tests30 out of 30 merged PRs checked by a CI test -- score normalized to 10
0CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
10Code-Reviewall changesets reviewed
10Contributorsproject has 11 contributing companies or organizations
10Dangerous-Workflowno dangerous workflow patterns detected
10Dependency-Update-Toolupdate tool detected
0Fuzzingproject is not fuzzed
10Licenselicense file detected
10Maintained30 commit(s) and 1 issue activity found in the last 90 days -- score normalized to 10
n/aPackagingpackaging workflow not detected
7Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 7
10SASTSAST tool is run on all commits
10Security-Policysecurity policy file detected
n/aSigned-Releasesno releases found
9Token-Permissionsdetected GitHub workflow tokens with excessive permissions
10Vulnerabilities0 existing vulnerabilities detected
Direct dependencies 11
RegistryPackageVersion constraintManifest
Gogoogle.golang.org/protobufv1.36.12bindings/go/go.mod
Gogithub.com/google/go-cmpv0.7.0tools/osv-linter/go.mod
Gogithub.com/google/osv-scalibrv0.5.2tools/osv-linter/go.mod
Gogithub.com/package-url/packageurl-gov0.1.7tools/osv-linter/go.mod
Gogithub.com/sethvargo/go-retryv0.4.0tools/osv-linter/go.mod
Gogithub.com/tidwall/gjsonv1.19.0tools/osv-linter/go.mod
Gogithub.com/urfave/cli/v2v2.27.7tools/osv-linter/go.mod
Gogithub.com/xeipuuv/gojsonschemav1.2.0tools/osv-linter/go.mod
Gogolang.org/x/modv0.40.0tools/osv-linter/go.mod
Gogolang.org/x/syncv0.22.0tools/osv-linter/go.mod
Gogolang.org/x/termv0.45.0tools/osv-linter/go.mod
All dependencies 184

Full resolved dependency set from the GitHub dependency graph: 11 direct and 173 indirect (transitive) packages. The transitive closure is complete when the repository commits a lockfile.

RegistryPackageVersionRelation
Gogithub.com/google/go-cmpv0.7.0direct
Gogithub.com/google/osv-scalibrv0.5.2direct
Gogithub.com/package-url/packageurl-gov0.1.7direct
Gogithub.com/sethvargo/go-retryv0.4.0direct
Gogithub.com/tidwall/gjsonv1.19.0direct
Gogithub.com/urfave/cli/v2v2.27.7direct
Gogithub.com/xeipuuv/gojsonschemav1.2.0direct
Gogolang.org/x/modv0.40.0direct
Gogolang.org/x/syncv0.22.0direct
Gogolang.org/x/termv0.45.0direct
Gogoogle.golang.org/protobufv1.36.12direct
Gogithub.com/cpuguy83/go-md2man/v2v2.0.7indirect
Gogithub.com/pmezard/go-difflibv1.0.1-0.20181226105442-5d4384ee4fb2indirect
Gogithub.com/russross/blackfriday/v2v2.1.0indirect
Gogithub.com/stretchr/testifyv1.11.1indirect
Gogithub.com/tidwall/matchv1.2.0indirect
Gogithub.com/tidwall/prettyv1.2.1indirect
Gogithub.com/xeipuuv/gojsonpointerv0.0.0-20190905194746-02993c407bfbindirect
Gogithub.com/xeipuuv/gojsonreferencev0.0.0-20180127040603-bd5ef7bd5415indirect
Gogithub.com/xrash/smetricsv0.0.0-20240521201337-686a1a2994c1indirect
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PyPIisort8.0.1indirect
PyPIjsonschema—indirect
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PyPIjsonschema-specifications2025.9.1indirect
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RubyGemsjson2.19.9indirect
RubyGemskramdown2.3.2indirect
RubyGemskramdown-parser-gfm1.1.0indirect
RubyGemsliquid4.0.4indirect
RubyGemslisten3.10.0indirect
RubyGemslogger1.7.0indirect
RubyGemsmercenary0.3.6indirect
RubyGemsminima2.5.1indirect
RubyGemsminitest6.0.2indirect
RubyGemsnet-http0.9.1indirect
RubyGemsnokogiri1.19.4indirect
RubyGemsoctokit4.25.1indirect
RubyGemspathutil0.16.2indirect
RubyGemsprism1.9.0indirect
RubyGemspublic_suffix4.0.7indirect
RubyGemsracc1.8.1indirect
RubyGemsrb-fsevent0.11.2indirect
RubyGemsrb-inotify0.11.1indirect
RubyGemsrexml3.4.4indirect
RubyGemsrouge3.26.0indirect
RubyGemsrubyzip2.4.1indirect
RubyGemssafe_yaml1.0.5indirect
RubyGemssass3.7.4indirect
RubyGemssass-listen4.0.0indirect
RubyGemssawyer0.9.3indirect
RubyGemssecurerandom0.4.1indirect
RubyGemssimpleidn0.2.3indirect
RubyGemsterminal-table1.8.0indirect
RubyGemstyphoeus1.5.0indirect
RubyGemstzinfo2.0.6indirect
RubyGemsunicode-display_width1.8.0indirect
RubyGemsuri1.1.1indirect
RubyGemswebrick1.9.2indirect
Dependency advisories 0

This repository publishes no package the index resolves, so its own dependency graph was assessed — 181 packages, which also include development and test pins that never ship: 0 carry known advisories, of which 0 are direct. 3 could not be assessed — no resolved version, an unsupported ecosystem, or beyond the reported package list.

No known advisories affect the assessed dependencies.

An advisory means the version recorded in the dependency graph falls inside an advisory’s affected range. Reachability is not analysed, and the graph includes development and test pins — a finding may concern tooling rather than shipped software.

Raw JSON report machine-readable

Feedback

Spotted something off in this report, or have thoughts to share? Wrong measurements, missed tooling, ideas, questions — anything is welcome. Every message is read and gets a response.

The message is kept through sign-in.

Scores are signals, not warranties. They reflect publicly visible practices on GitHub — not a code audit, and not a security guarantee.

Missing data is excluded and weights renormalized, never scored as zero. Methodology is versioned and open: metrics v2.10.0, schema v0.34.0 — full methodology · metrics wiki.

How one result sits in the wider record: aggregate statistics — Go.