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Projects that follow the best practices below can voluntarily self-certify and show that they've achieved an Open Source Security Foundation (OpenSSF) best practices badge.

There is no set of practices that can guarantee that software will never have defects or vulnerabilities; even formal methods can fail if the specifications or assumptions are wrong. Nor is there any set of practices that can guarantee that a project will sustain a healthy and well-functioning development community. However, following best practices can help improve the results of projects. For example, some practices enable multi-person review before release, which can both help find otherwise hard-to-find technical vulnerabilities and help build trust and a desire for repeated interaction among developers from different companies. To earn a badge, all MUST and MUST NOT criteria must be met, all SHOULD criteria must be met OR be unmet with justification, and all SUGGESTED criteria must be met OR unmet (we want them considered at least). If you want to enter justification text as a generic comment, instead of being a rationale that the situation is acceptable, start the text block with '//' followed by a space. Feedback is welcome via the GitHub site as issues or pull requests There is also a mailing list for general discussion.

We gladly provide the information in several locales, however, if there is any conflict or inconsistency between the translations, the English version is the authoritative version.
If this is your project, please show your baseline badge status on your project page! The baseline badge status looks like this: Baseline badge level for project 14085 is baseline-2 Here is how to embed the baseline badge:
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These are the Baseline Level 2 criteria. These are criteria version v2026.08.28.

Baseline Series: Baseline Level 1 Baseline Level 2 Baseline Level 3

        

 Basics

  • General

    Note that other projects may use the same name.

    Personal Flask to-do app built to production discipline — v2.3.0 (AGPL-3.0, DOI-archived): 114 machine-checked gates, 78 ADRs, 27 recorded governance audits · OpenSSF Silver badge, PR-only main, signed releases with SLSA provenance, ASVS 5.0 L2 assessed, 27 required checks against real services

    Please use SPDX license expression format; examples include "Apache-2.0", "BSD-2-Clause", "BSD-3-Clause", "GPL-2.0+", "LGPL-3.0+", "MIT", and "(BSD-2-Clause OR Ruby)". Do not include single quotes or double quotes.
    If there is more than one language, list them as comma-separated values (spaces optional) and sort them from most to least used. If there is a long list, please list at least the first three most common ones. If there is no language (e.g., this is a documentation-only or test-only project), use the single character "-". Please use a conventional capitalization for each language, e.g., "JavaScript".
    The Common Platform Enumeration (CPE) is a structured naming scheme for information technology systems, software, and packages. It is used in a number of systems and databases when reporting vulnerabilities.

 Controls 19/19 ●

  • Controls


    Enough for a badge!

    When a CI/CD task is executed with no permissions specified, the CI/CD system MUST default the task's permissions to the lowest permissions granted in the pipeline. [OSPS-AC-04.01]
    Configure the project's settings to assign the lowest available permissions to new pipelines by default, granting additional permissions only when necessary for specific tasks.

    The repository default for GITHUB_TOKEN is read-only (default_workflow_permissions=read, and workflows cannot approve pull requests); every job additionally declares its own permissions block. OpenSSF Scorecard scores Token-Permissions 10/10.


    Enough for a badge!

    When an official release is created, that release MUST be assigned a unique version identifier. [OSPS-BR-02.01]
    Assign a unique version identifier to each release produced by the project, following a consistent naming convention or numbering scheme. Examples include SemVer, CalVer, or git commit id.

    Every release carries a unique SemVer git tag (v1.0.0 through v2.3.0); the version is also asserted in app/init.py and a test fails if the tag, the code and CHANGELOG.md disagree.


    Enough for a badge!

    When an official release is created, that release MUST contain a descriptive log of functional and security modifications. [OSPS-BR-04.01]
    Ensure that all releases include a descriptive change log. It is recommended to ensure that the change log is human-readable and includes details beyond commit messages, such as descriptions of the security impact or relevance to different use cases. To ensure machine readability, place the content under a markdown header such as "## Changelog".

    CHANGELOG.md follows Keep a Changelog with a section per release, and release notes repeat it. Releases that fix published CVEs name them explicitly — v1.5.0 lists all seven cryptography advisories.


    Enough for a badge!

    When a build and release pipeline ingests dependencies, it MUST use standardized tooling where available. [OSPS-BR-05.01]
    Use a common tooling for your ecosystem, such as package managers or dependency management tools to ingest dependencies at build time. This may include using a dependency file, lock file, or manifest to specify the required dependencies, which are then pulled in by the build system.

    Dependencies are ingested with standard tooling only: pipenv with a hash-pinned Pipfile.lock for the application, pip --require-hashes for CI tools under pins/, and npm ci for the JavaScript tooling. A test fails the build if any workflow installs without hashes.


    Enough for a badge!

    When an official release is created, that release MUST be signed or accounted for in a signed manifest including each asset's cryptographic hashes. [OSPS-BR-06.01]
    Sign all released software assets at build time with a cryptographic signature or attestations, such as GPG or PGP signature, Sigstore signatures, SLSA provenance, or SLSA VSAs. Include the cryptographic hashes of each asset in a signed manifest or metadata file.

    Every asset attached to a release is signed keyless with cosign/sigstore — each SBOM ships with its .sigstore.json bundle — and the build carries SLSA provenance verified with gh attestation verify before the assets are published (ADR 0058). Note: GitHub's auto-generated source archives and the git tags themselves are not separately signed; ADR 0058 records that decision and the condition for revisiting it.


    Enough for a badge!

    When the project has made a release, the project documentation MUST include a description of how the project selects, obtains, and tracks its dependencies. [OSPS-DO-06.01]
    It is recommended to publish this information alongside the project's technical & design documentation on a publicly viewable resource such as the source code repository, project website, or other channel.

    docs/SUPPLY-CHAIN.md documents how dependencies are selected, obtained and tracked across every layer (application, CI tooling, container base image, service images), including the pinning rules and the two-way CVE registers. ADR 0025 documents how plugin dependencies are kept separable.


    Enough for a badge!

    The project documentation MUST include instructions on how to build the software, including required libraries, frameworks, SDKs, and dependencies. [OSPS-DO-07.01]
    It is recommended to publish this information alongside the project's contributor documentation, such as in CONTRIBUTING.md or other developer task documentation. This may also be documented using Makefile targets or other automation scripts.

    README.md and CONTRIBUTING.md give the full build path: Python 3.13, pipenv sync --dev, the plugin dependency categories, and the single preflight command that runs what CI runs. docs/OPERATIONS.md covers container and compose builds.


    Enough for a badge!

    The project documentation MUST include a list of project members with access to sensitive resources. [OSPS-GV-01.01]
    Document project participants and their roles through such artifacts as members.md, governance.md, maintainers.md, or similar file within the source code repository of the project. This may be as simple as including names or account handles in a list of maintainers, or more complex depending on the project's governance.

    CONTRIBUTING.md section 'Who holds what' lists every member with access to sensitive resources: a single maintainer (@sayam) who is the only account with write access, administration rights and repository secrets. There are no teams or service accounts with write access.


    Enough for a badge!

    The project documentation MUST include descriptions of the roles and responsibilities for members of the project [OSPS-GV-01.02]
    Document project participants and their roles through such artifacts as members.md, governance.md, maintainers.md, or similar file within the source code repository of the project.

    The same section describes the roles and their responsibilities, and ADR 0053 records the compensating controls that stand in for separation of duties in a single-maintainer project, together with the condition that ends the arrangement.


    Enough for a badge!

    The project documentation MUST include a guide for code contributors that includes requirements for acceptable contributions. [OSPS-GV-03.02]
    Extend the CONTRIBUTING.md or CONTRIBUTING/ contents in the project documentation to outline the requirements for acceptable contributions, including coding standards, testing requirements, and submission guidelines for code contributors. It is recommended that this guide is the source of truth for both contributors and approvers.

    CONTRIBUTING.md states what an acceptable contribution must satisfy: pull-request-only flow, Conventional Commits with a 72-character subject, ruff and mypy clean, mutation proof for every new test, registration of new test files in gates.yaml, and an ADR for any new decision.


    Enough for a badge!

    The version control system MUST require all code contributors to assert that they are legally authorized to make the associated contributions on every commit. [OSPS-LE-01.01]
    Include a DCO in the project's repository, requiring code contributors to assert that they are legally authorized to commit the associated contributions on every commit. Use a status check to ensure the assertion is made. A CLA also satisfies this requirement. Some version control systems, such as GitHub, may include this in the platform terms of service.

    Every commit must carry a Signed-off-by line (Developer Certificate of Origin 1.1), added by git commit -s. The commit-msg hook rejects an unsigned commit on the contributor's machine and the commit-lint CI job checks every commit a pull request adds, including pull requests from forks. ADR 0073 records the decision, including the deliberate choice not to rewrite history that predates the rule.


    Enough for a badge!

    When a commit is made to the primary branch, any automated status checks for commits MUST pass or be manually bypassed. [OSPS-QA-03.01]
    Configure the project's version control system to require that all automated status checks pass or require manual acknowledgement before a commit can be merged into the primary branch. It is recommended that any optional status checks are NOT configured as a pass or fail requirement that approvers may be tempted to bypass.

    main is protected: 27 required status checks must pass before merge and enforce_admins is on, so the maintainer cannot bypass them either. The posture job compares the live settings with ADR 0053 on every push.


    Enough for a badge!

    Prior to a commit being accepted, the project's CI/CD pipelines MUST run at least one automated test suite to ensure the changes meet expectations. [OSPS-QA-06.01]
    Automated tests should be run prior to every merge into the primary branch. The test suite should be run in a CI/CD pipeline and the results should be visible to all contributors. The test suite should be run in a consistent environment and should be run in a way that allows contributors to run the tests locally. Examples of test suites include unit tests, integration tests, and end-to-end tests.

    Every pull request runs the full test suite (1,773 tests) plus the same suite against MySQL and MariaDB, an authenticated DAST scan, an accessibility scan and a real compose stack — 27 required checks in total.


    Enough for a badge!

    When the project has made a release, the project documentation MUST include design documentation demonstrating all actions and actors within the system. [OSPS-SA-01.01]
    Include designs in the project documentation that explains the actions and actors. Actors include any subsystem or entity that can influence another segment in the system. Ensure this is updated for new features or breaking changes.

    docs/ARCHITECTURE.md is an ISO/IEC 42010 style description: system context, stakeholders and their concerns, viewpoints and views, and correspondence rules between them. docs/DESIGN.md covers the user-facing side, and every decision links back to an ADR.


    Enough for a badge!

    When the project has made a release, the project documentation MUST include descriptions of all external software interfaces of the released software assets. [OSPS-SA-02.01]
    Document all software interfaces (APIs) of the released software assets, explaining how users can interact with the software and what data is expected or produced. Ensure this is updated for new features or breaking changes.

    docs/openapi.json describes the HTTP API and is generated from the code, with CI failing if it drifts. The CLI surface is documented in CONTRIBUTING.md and docs/OPERATIONS.md, and the plugin interfaces are specified in the ADRs they were introduced by.


    Enough for a badge!

    When the project has made a release, the project MUST perform a security assessment to understand the most likely and impactful potential security problems that could occur within the software. [OSPS-SA-03.01]
    Performing a security assessment informs both project members as well as downstream consumers that the project understands what problems could arise within the software. Understanding what threats could be realized helps the project manage and address risk. This information is useful to downstream consumers to demonstrate the security acumen and practices of the project. Ensure this is updated for new features or breaking changes.

    docs/RISK-ASSESSMENT.md holds a risk register with a documented likelihood x impact method and a machine-checked level formula. It sits alongside a full ASVS 5.0 L2 self-assessment (253 requirements) and an ISO/IEC 27001:2022 self-assessment (116 controls).


    Enough for a badge!

    The project documentation MUST include a policy for coordinated vulnerability disclosure (CVD), with a clear timeframe for response. [OSPS-VM-01.01]
    Create a SECURITY.md file at the root of the directory, outlining the project's policy for coordinated vulnerability disclosure. Include a method for reporting vulnerabilities. Set expectations for how the project will respond and address reported issues.

    SECURITY.md is a coordinated disclosure policy with explicit timeframes: acknowledgement within 7 days, initial assessment within 14, and fixes within 7/30/90 days by severity. A test fails CI when a scheduled security review is overdue.


    Enough for a badge!

    The project documentation MUST provide a means for private vulnerability reporting directly to the security contacts within the project. [OSPS-VM-03.01]
    Provide a means for security researchers to report vulnerabilities privately to the project. This may be a dedicated email address, a web form, VCS specialized tools, email addresses for security contacts, or other methods.

    GitHub private vulnerability reporting is enabled and SECURITY.md points to it as the primary channel, giving the reporter a private thread with the maintainer.


    Enough for a badge!

    The project documentation MUST publicly publish data about discovered vulnerabilities. [OSPS-VM-04.01]
    Provide information about known vulnerabilities in a predictable public channel, such as a CVE entry, blog post, or other medium. To the degree possible, this information should include affected version(s), how a consumer can determine if they are vulnerable, and instructions for mitigation or remediation.

    Fixed vulnerabilities are published in CHANGELOG.md and in the release notes, naming each advisory; accepted-but-unfixed advisories are published with their reasoning in pins/accepted-advisories.txt, app/plugins/accepted-advisories.txt and deploy/accepted-image-advisories.txt, all of which CI checks in both directions.



You can use tools and AI systems to propose changes via a simple URL, such as https://www.bestpractices.dev/en/projects/14085/choose/edit?osps_ac_01_01_status=Met&osps_ac_01_01_justification=GitHub+enforced. See our automation proposals system for how to do that. This data is available under the Community Data License Agreement – Permissive, Version 2.0 (CDLA-Permissive-2.0). This means that a Data Recipient may share the Data, with or without modifications, so long as the Data Recipient makes available the text of this agreement with the shared Data. Please credit Sayam and the OpenSSF Best Practices badge contributors.

Project badge entry owned by: Sayam.
Entry created on 2026-08-15 04:13:43 UTC, last updated on 2026-08-29 02:24:01 UTC. Last achieved passing badge on 2026-08-16 00:34:59 UTC.