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@ossf

Open Source Security Foundation (OpenSSF)

OpenSSF is a community of software developers and security engineers who are working together to secure open source software for the greater public good.
OpenSSF Logo

OpenSSF is committed to working both upstream and with existing communities to advance open source security for all.

We foster collaboration, establish best practices, and develop innovative solutions to secure the development, maintenance, and consumption of open source software. OpenSSF is part of the nonprofit Linux Foundation.

Working Groups:

For any questions, concerns, reports, etc., please email operations@openssf.org.

Get Involved

Membership

We encourage all individual contributors to work with their employers to become members. We aim to grow an active, healthy community of contributors, reviewers, and code owners. Learn more about the requirements and responsibilities of membership in our Membership page or see current members.

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  1. wg-best-practices-os-developers wg-best-practices-os-developers Public

    The Best Practices for OSS Developers working group is dedicated to raising awareness and education of secure code best practices for open source developers.

    JavaScript 1.1k 210

  2. ai-ml-security ai-ml-security Public

    Working Group on Artificial Intelligence and Machine Learning (AI/ML) Security

    200 32

  3. wg-securing-critical-projects wg-securing-critical-projects Public archive

    Helping allocate resources to secure the critical open source projects we all depend on.

    413 63

  4. wg-securing-software-repos wg-securing-software-repos Public

    OpenSSF Working Group on Securing Software Repositories

    134 35

  5. tac tac Public

    Technical Advisory Council

    155 89

  6. foundation foundation Public

    OpenSSF Governance and Legal Docs

    75 20

Repositories

Showing 10 of 85 repositories
  • malicious-packages Public

    A repository of reports of malicious packages identified in Open Source package repositories, consumable via the Open Source Vulnerability (OSV) format.

    ossf/malicious-packages's past year of commit activity
    Go 641 Apache-2.0 177 41 52 Updated Nov 5, 2026
  • osv-schema Public

    Open Source Vulnerability schema.

    ossf/osv-schema's past year of commit activity
    Go 273 Apache-2.0 136 53 13 Updated Nov 5, 2026
  • oss-crs Public

    Cyber Reasoning Systems for Bug-Finding and Patching in Open Source Software

    ossf/oss-crs's past year of commit activity
    Python 175 MIT 48 32 (3 issues need help) 34 Updated Nov 5, 2026
  • wg-supply-chain-integrity Public

    Our objective is to enable open source maintainers, contributors and end-users to understand and make decisions on the provenance of the code they maintain, produce and use.

    ossf/wg-supply-chain-integrity's past year of commit activity
    210 Apache-2.0 44 7 4 Updated Nov 5, 2026
  • cve-bin-tool Public

    The CVE Binary Tool helps you determine if your system includes known vulnerabilities. You can scan binaries for over 350 common, vulnerable components (openssl, libpng, libxml2, expat and others), or if you know the components used, you can get a list of known vulnerabilities associated with an SBOM or a list of components and versions.

    ossf/cve-bin-tool's past year of commit activity
    Python 1,808 GPL-3.0 706 155 (4 issues need help) 94 Updated Nov 4, 2026
  • wg-best-practices-os-developers Public

    The Best Practices for OSS Developers working group is dedicated to raising awareness and education of secure code best practices for open source developers.

    ossf/wg-best-practices-os-developers's past year of commit activity
    JavaScript 1,087 Apache-2.0 210 59 (2 issues need help) 9 Updated Nov 4, 2026
  • tac Public

    Technical Advisory Council

    ossf/tac's past year of commit activity
    155 89 47 (5 issues need help) 19 Updated Nov 4, 2026
  • scorecard-infra Public

    OpenSSF Scorecard infrastructure

    ossf/scorecard-infra's past year of commit activity
    Go 3 Apache-2.0 6 14 13 Updated Nov 4, 2026
  • si-tooling Public
    ossf/si-tooling's past year of commit activity
    Go 9 Apache-2.0 5 0 0 Updated Nov 4, 2026
  • security-insights Public

    Machine-readable specification for the attestation of security-relevant data.

    ossf/security-insights's past year of commit activity
    JavaScript 83 23 8 1 Updated Nov 4, 2026