Bump oauthlib from 3.3.1 to 4.0.0

[dependabot]

Bumps oauthlib from 3.3.1 to 4.0.0.

Release notes

Sourced from oauthlib's releases.

4.0.0

Introduction

The release 4.0.0 defines the foundation that enables AI contributions and will improve the maintenance of oauthlib by using AI agents, skills, code for both contributors and maintainers. It includes devcontainer, skills and cleanup of instructions.

What's Changed

Important: this release contains 2 breaking changes. See CHANGELOG.rst for details:

• Removed JSONP support from token revocation endpoint (#951)
• Client authentication validation reorganized across grants (#919, #920): the grant_type parameter is now validated before client authentication.

• Replace pyenv with uv in documentation and tooling by @​JonathanHuot in oauthlib/oauthlib#910
• Improve github action to publish package by @​JonathanHuot in oauthlib/oauthlib#915
• Add pre-commit to run linters, formatters, etc. on code changes by @​cclauss in oauthlib/oauthlib#918
• Fix client authentication for DeviceCodeGrant when getting a token by @​hekhuisk in oauthlib/oauthlib#920
• Add project URLs to this project's PyPI page by @​Flimm in oauthlib/oauthlib#921
• Fix a typo in ServiceApplicationClient docstring. by @​rafalkrupinski in oauthlib/oauthlib#923
• Correct grammar in function help by @​verhovsky in oauthlib/oauthlib#924
• Add Python 3.14 to the testing by @​cclauss in oauthlib/oauthlib#925
• Initial python/uv/tox devcontainer by @​JonathanHuot in oauthlib/oauthlib#930
• Fix ruff checks about unused variables by @​JonathanHuot in oauthlib/oauthlib#931
• Drop EOL Python 3.8 from CI by @​auvipy in oauthlib/oauthlib#932
• Set Open Collective username to 'oauthlib' by @​auvipy in oauthlib/oauthlib#933
• pre-commit autoupdate 2026_02_21 by @​cclauss in oauthlib/oauthlib#934
• Remove a trailing whitespace fo fix failing pre-commit by @​cclauss in oauthlib/oauthlib#935
• Fix typos discovered by typos by @​cclauss in oauthlib/oauthlib#938
• Add resource to Request._params by @​juannyG in oauthlib/oauthlib#942
• Release 3.4.0: Add OAuthLib Maintainer agent by @​JonathanHuot in oauthlib/oauthlib#950
• Remove JSONP support from token revocation by @​JonathanHuot in oauthlib/oauthlib#951
• Improve PKCE code comparison by @​JonathanHuot in oauthlib/oauthlib#963
• Release 4.0.0: bump and update changelog by @​JonathanHuot in oauthlib/oauthlib#976

New Contributors

• @​hekhuisk made their first contribution in oauthlib/oauthlib#920
• @​Flimm made their first contribution in oauthlib/oauthlib#921
• @​verhovsky made their first contribution in oauthlib/oauthlib#924
• @​juannyG made their first contribution in oauthlib/oauthlib#942

Full Changelog: oauthlib/oauthlib@v3.3.1...v4.0.0

Changelog

Sourced from oauthlib's changelog.

4.0.0 (2026-09-28):

OAuth2.0 Provider:

• Breaking: #951: Removed JSONP support from token revocation endpoint. JSONP has been superseded by CORS for cross-origin requests. The enable_jsonp parameter has been removed from RevocationEndpoint and the callback parameter has been removed from prepare_token_revocation_request.
• Breaking: #919, #920: Fixed DeviceCodeGrant.validate_token_request trying to authenticate public clients. Client authentication validation has been reorganized and is now shared across AuthorizationCodeGrant, DeviceCodeGrant, RefreshTokenGrant and ResourceOwnerPasswordCredentialsGrant: the grant_type parameter is validated before client authentication, so requests missing grant_type now return 400 invalid_request instead of 401 invalid_client.
• #963: Improved PKCE code comparison

Misc:

• #904: Stop installing examples into site-packages.
• #930: Add devcontainer, Add Python3.14, Python3.14t.
• #931: Fix ruff checks about unused variables.
• #932: Dropped EOL Python 3.8 from CI.
• #934: Pre-commit hooks autoupdate.
• #938: Fix typos discovered by typos.
• Add OAuthLib Maintainer agent for automated issue/PR triage and release management.

Commits

• 145a9a4 Release 4.0.0: clarify changelog breaking changes and reformat entries
• c8344d6 Update CHANGELOG.rst
• e172830 Release 4.0.0: bump version to 4.0.0 and update changelog
• 40b0ab5 Merge pull request #963 from oauthlib/ft/pkcecode
• 1b68cea Merge pull request #920 from hekhuisk/validate-client-authentication
• c951a1d Organized validate_client functions for all grant to avoid mistake in grnat i...
• 74664d3 Improve PKCE code comparison
• 9859b05 Merge pull request #950 from oauthlib/feature/3.4.0-maintainer-agent
• 9bf9b97 Merge branch 'master' into feature/3.4.0-maintainer-agent
• 1ba7429 Clarify agent instructions
• Additional commits viewable in compare view

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[podkidyshev]

@dependabot rebase

[podkidyshev]

Reviewed oauthlib 3.3.1 -> 4.0.0 on the exact rebased head.

CloudAI reaches oauthlib through kubernetes 35.0.0 -> requests-oauthlib 2.0.0. The relevant use is OAuth2 client refresh of expired OIDC kubeconfigs. CloudAI has no direct oauthlib imports or provider/revocation usage. Documented JSONP/revocation removals and provider authentication-validation changes do not affect this path.

Validation:

• Both pinned artifact URLs/SHA256 hashes match PyPI metadata; downloaded wheel and sdist hashes verified. Not yanked, Python >=3.9 compatible with CloudAI >=3.10; PyPI reports no affecting vulnerabilities.
• Publisher provenance identifies oauthlib/oauthlib, python-build.yml. All 75 Python package files match upstream v4.0.0 byte-for-byte. Runtime source diff reviewed; no suspicious changes found.
• 132 focused Kubernetes, registration, installer and workload tests passed with updated locked environments on Python 3.10 and 3.14.
• Temporary integration probes passed for both 3.3.1 and 4.0.0 on both Python versions: actual CloudAI KubernetesSystem initialization with expired/unexpired OIDC kubeconfigs, real OAuth2Session refresh request construction and oauthlib response parsing, Basic auth and grant/refresh parameters, rotated credential persistence, all three Kubernetes API clients receiving refreshed tokens, and authenticated bearer requests. Only external HTTP transport was mocked; no live credentials/cluster used.
• pre-commit uv.lock passes; fresh CI passes lint, full pytest 3.14 and smoke 3.10/3.14.
• Remote PR tree 013b4525f79384522f80b9ffa8293419e1cf3828 matches locally tested tree. Only three oauthlib substitutions in uv.lock; no code changes.

Safe for CloudAI's examined use. External applications using removed revocation APIs or provider behavior need their own compatibility assessment.