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Enforce DNS-length cap on individual labels early in check_label,
short-circuiting contextual-rule processing for oversized input
while staying compatible with UTS 46 usage.
Tidy core helpers: hoist bidi category sets to module-level
frozensets (avoiding per-codepoint list construction), simplify
length checks, and reuse the shared _unicode_dots_re from
idna.core in the codec module.
Use raise ... from err for proper exception chaining and
switch internal string formatting to f-strings.
Allow flit_core 4.x in the build backend.
Expand the ruff lint set (flake8-bugbear, flake8-simplify,
pyupgrade, perflint) and apply the surfaced fixes; pin lint CI
to Python 3.14.
Add Dependabot configuration for GitHub Actions.
Convert README and HISTORY from reStructuredText to Markdown.
Reference CVE-2026-45409 for the 3.14 advisory in place of the
initial GHSA identifier.
Thanks to Felix Yan, Stan Ulbrych, and metsw24-max for
contributions to this release.
3.14 (2026-05-10)
Removed opportunity to process long inputs into quadratic
time by rejecting oversize inputs up-front. Closes a bypass
of the CVE-2024-3651 mitigation. [CVE-2026-45409]
Thanks to Stan Ulbrych for reporting the issue.
3.13 (2026-04-22)
Correct classification error for codepoint U+A7F1
3.12 (2026-04-21)
Update to Unicode 17.0.0.
Issue a deprecation warning for the transitional argument.
Added lazy-loading to provide some performance improvements.
Removed vestiges of code related to Python 2 support, including
segmentation of data structures specific to Jython.
Thanks to Rodrigo Nogueira for contributions to this release.
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Bumps idna from 3.11 to 3.15.
Changelog
Sourced from idna's changelog.
Commits
af30a09Release 3.1530314d4Pre-release 3.15rc005d4b21Merge pull request #237 from kjd/convert-docs-to-markdown2987fdbConvert README and HISTORY from reStructuredText to Markdown59fa800Merge pull request #236 from kjd/dependabot/github_actions/actions-f3e34333eadef6983Merge branch 'master' into dependabot/github_actions/actions-f3e34333eabbd8004Merge pull request #234 from StanFromIreland/patch-1edd07c0Bump github/codeql-action from 3.35.2 to 4.35.2 in the actions group5557db0Merge branch 'master' into patch-1f11746cMerge pull request #235 from StanFromIreland/patch-2Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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@dependabot rebasewill rebase this PR@dependabot recreatewill recreate this PR, overwriting any edits that have been made to it@dependabot show <dependency name> ignore conditionswill show all of the ignore conditions of the specified dependency@dependabot ignore this major versionwill close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)@dependabot ignore this minor versionwill close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)@dependabot ignore this dependencywill close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)You can disable automated security fix PRs for this repo from the Security Alerts page.