Public record
Software health reportschema 0.27.0 · metrics 2.10.0 · 2026-07-26 00:06 UTC

ossf / osv-schema

Open Source Vulnerability schema.

Go · PythonApache-2.0★ 260 stars⑂ 120 forkssince Jul 2021View on GitHub ↗
KindCommand-line toolhow 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 Vitality (91/100) and lowest on AI Readiness (67/100). It was last updated 1 day 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 86 is calibrated to 98 on the published index scale (record calibration 2026-08-02).

Ownership

2,488 followers80 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-schemav1.8.0-1916 days ago

Metrics by category

Vitality

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

91Excellent · 21% of overall
How it's scored
36/36Push recencylast push 1 days ago
25.6/36Commit cadence37/52 weeks with commits
18/18Commit volume147 commits in the last year
10/10OpenSSF Scorecard: Maintained23 commit(s) and 3 issue activity found in the last 90 days -- score normalized to 10
Inputs used
commits_last_year147
human_commit_share0.66
days_since_last_push1
active_weeks_last_year37
How it's scored
27/27Ships releases21 releases published
36/36Release recencylatest release 16 days ago
19.8/27Release cadencea release every ~75.5 days
0/10OpenSSF Scorecard: Signed-Releasesno data
Inputs used
releases_count21
latest_release_tagv1.8.0
releases_from_tagsno
days_since_latest_release16
mean_days_between_releases75.5
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
39.1/60Stars260 stars
17.3/25Forks120 forks
7.9/15Watchers27 watchers
Inputs used
forks120
stars260
watchers27
growth_stateunverified
growth_factor_pct100
growth_unverified_reasonno_history

Community health

85Excellent
How it's scored
22.5/22.5README
22.5/22.5Licenserecognized 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_badges
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?

89Excellent · 23% of overall
How it's scored
43.2/54Bus factor4 contributor(s) cover half of all commits
17/22.5Commit distributiontop contributor authored 25% of commits
13.5/13.5Contributor breadth69 contributors
10/10OpenSSF Scorecard: Contributorsproject has 11 contributing companies or organizations
Inputs used
bus_factor4
contributors_sampled69
top_contributor_share0.246
How it's scored
26.7/42Issue resolution64% of issues closed
26.2/30PR acceptance366/419 decided PRs merged
0/13Newcomer PR acceptanceno first-time contributor's PR decided in 30d
15/15OpenSSF Scorecard: Code-Reviewall changesets reviewed
Inputs used
merged_prs366
open_issues52
closed_issues91
prs_merged_7d
prs_decided_7d
prs_merged_30d
prs_decided_30d
issue_closed_ratio0.636
closed_unmerged_prs53
first_time_authors_30d
first_time_prs_merged_30d
first_time_prs_decided_30d
Excluded from scoring (no data or not applicable): Newcomer PR acceptance. Remaining weights renormalized.
How it's scored
30/30Ownership backingorganization-owned
0/20Verified domainverified-domain status not read for this organization
24.4/25Owner reach2,488 followers of ossf
25/25Track record80 public repos, account ~6 yr old
Inputs used
followers2,488
owner_typeOrganization
is_verified
owner_loginossf
public_repos80
account_age_days2,215
Excluded from scoring (no data or not applicable): Verified domain. Remaining weights renormalized.

Package maintenance

100Exceptional
How it's scored
25/25Published & resolvable1 package(s) on go
35/35Publish recencylatest publish 16 days ago
20/20Version history19 published versions
20/20Not deprecatedactive, not deprecated or yanked
Inputs used
packagesgithub.com/ossf/osv-schema
ecosystemsgo
any_deprecatedno
min_days_since_publish16

Engineering Quality

Are baseline engineering and documentation practices in place?

90Excellent · 19% of overall
How it's scored
24/24CI workflows3 workflow(s)
24/24Tests present
16/16Linter config.pylintrc
0/9.6Pre-commit hooks
6.4/6.4.editorconfig
20/20OpenSSF Scorecard: CI-Tests30 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 sitehttps://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?

88Excellent · 16% of overall

Security posture

85Excellent
How it's scored
7.5/7.5Binary-Artifactsno binaries found in the repo
0/7.5Branch-Protectionno data
2.5/2.5CI-Tests30 out of 30 merged PRs checked by a CI test -- score normalized to 10
0/2.5CII-Best-Practicesno effort to earn an OpenSSF best practices badge detected
7.5/7.5Code-Reviewall changesets reviewed
2.5/2.5Contributorsproject has 11 contributing companies or organizations
10/10Dangerous-Workflowno dangerous workflow patterns detected
7.5/7.5Dependency-Update-Toolupdate tool detected
0/5Fuzzingproject is not fuzzed
2.5/2.5Licenselicense file detected
7.5/7.5Maintained23 commit(s) and 3 issue activity found in the last 90 days -- score normalized to 10
0/5Packagingno data
3.5/5Pinned-Dependenciesdependency not pinned by hash detected -- score normalized to 7
5/5SASTSAST tool is run on all commits
5/5Security-Policysecurity policy file detected
0/7.5Signed-Releasesno data
6.8/7.5Token-Permissionsdetected GitHub workflow tokens with excessive permissions
4.5/7.5Vulnerabilities4 existing vulnerabilities detected
Inputs used
sourceopenssf_scorecard
checks_evaluated15
scorecard_versionv5.5.0
checks_inconclusive3
scorecard_aggregate8.5
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 advisoriesno direct dependency carries a known advisory
0/25Indirect dependencies free of known advisoriestransitive set not separable from development and test dependencies in this scope
0/40No advisories left outstandingno advisory carries a publication date
Inputs used
sourceosv
advisories7
affected_packages2
assessed_packages180
unassessed_packages3
affected_by_severityhigh 1, moderate 1
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 180 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 instructionsno CLAUDE.md / AGENTS.md / editor rules
0/15Machine-readable docs (llms.txt)
40/40Legible commit history66 of 66 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 bootstrapbindings/go/go.mod, tools/osv-linter/go.mod (toolchain convention, no task runner)
22/22Automated tests
11/11Lint / format config.pylintrc
11/11Static type checkingGo (statically typed)
10/10Reproducible environmentlockfile
0/10Demonstrated agent practiceno agent-authored commits among the last 100
8/8Automated maintenance34 of the last 100 commits are automated dependency updates
7/10OpenSSF Scorecard: Pinned-Dependenciesdependency 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_share0.34
How it's scored
45/45Type-checkable codeGo (statically typed)
55/55Manageable file sizes0/36 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 servernot 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

260GitHub stars
69contributors
147commits, last 12 months
1days since last push
21releases
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 ★ / 120 ⇿
0Stars
120Forks
19Releases

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.

02040608010012011532021-092024-022026-07
Major 1Minor 6Patch 12

Each point covers 5 days.

OpenSSF Scorecard 8.5 / 10
8.5aggregate

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 · 2026-07-26 00:06 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
10Maintained23 commit(s) and 3 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
6Vulnerabilities4 existing vulnerabilities detected
Direct dependencies 11
RegistryPackageVersion constraintManifest
Gogoogle.golang.org/protobufv1.36.11bindings/go/go.mod
Gogithub.com/google/go-cmpv0.7.0tools/osv-linter/go.mod
Gogithub.com/google/osv-scalibrv0.4.5tools/osv-linter/go.mod
Gogithub.com/package-url/packageurl-gov0.1.6tools/osv-linter/go.mod
Gogithub.com/sethvargo/go-retryv0.3.0tools/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/modv0.38.0tools/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 183

Full resolved dependency set from the GitHub dependency graph: 11 direct and 172 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-scalibrv0.4.5direct
Gogithub.com/package-url/packageurl-gov0.1.6direct
Gogithub.com/sethvargo/go-retryv0.3.0direct
Gogithub.com/tidwall/gjsonv1.19.0direct
Gogithub.com/urfave/cli/v2v2.27.7direct
Gogithub.com/xeipuuv/gojsonschemav1.2.0direct
Gogolang.org/x/modv0.38.0direct
Gogolang.org/x/syncv0.22.0direct
Gogolang.org/x/termv0.45.0direct
Gogoogle.golang.org/protobufv1.36.11direct
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/testifyv1.10.0indirect
Gogithub.com/tidwall/matchv1.1.1indirect
Gogithub.com/tidwall/prettyv1.2.0indirect
Gogithub.com/xeipuuv/gojsonpointerv0.0.0-20190905194746-02993c407bfbindirect
Gogithub.com/xeipuuv/gojsonreferencev0.0.0-20180127040603-bd5ef7bd5415indirect
Gogithub.com/xrash/smetricsv0.0.0-20240521201337-686a1a2994c1indirect
Gogolang.org/x/sysv0.47.0indirect
PyPIastroid4.0.4indirect
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PyPIgoogle-cloud-datastore2.24.0indirect
PyPIgoogle-cloud-logging3.15.0indirect
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PyPIgoogle-cloud-pubsub2.38.0indirect
PyPIgoogle-cloud-storage3.10.1indirect
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PyPIisort8.0.1indirect
PyPIjsonschemaindirect
PyPIjsonschema4.26.0indirect
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
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RubyGemsprism1.9.0indirect
RubyGemspublic_suffix4.0.7indirect
RubyGemsracc1.8.1indirect
RubyGemsrb-fsevent0.11.2indirect
RubyGemsrb-inotify0.11.1indirect
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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 2

This repository publishes no package the index resolves, so its own dependency graph was assessed — 180 packages, which also include development and test pins that never ship: 2 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.

PackageVersionRelationSeverityAdvisoriesFixed in
pyasn10.6.3indirecthigh50.6.4
setuptools82.0.1indirectmoderate283.0.0

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 v0.27.0 — full methodology · metrics wiki.

How one result sits in the wider record: aggregate statisticsGo.