[dependabot]

Bumps pypa/cibuildwheel from 4.3.1 to 4.3.4.

Release notes

Sourced from pypa/cibuildwheel's releases.

v4.3.4

• 🔐 Warns when a uv build frontend is selected and the host uv is older than 0.13.4, which still trusts the compromised eMudhra CA roots (#3021)
• 🔐 Uses cibuildwheel's CA bundle for pip on Python 3.9, where pip uses its bundled certifi, which still trusts the compromised eMudhra roots (#3017)
• 🔐 Uses cibuildwheel's CA bundle for pip on GraalPy, where truststore is not supported (#3019)
• 🔐 Uses cibuildwheel's CA bundle in Android, iOS, and Pyodide cross venvs, where pip uses the host's OpenSSL CA file (#3020)
• 🐛 Seeds build's isolated environment with the pinned pip on macOS and Windows, fixing GraalPy 25.0 builds (#3018)
• 💼 Stops Azure cache growth from restoreKeys (#3022)

v4.3.3

• 🔐 Updates manylinux images and pip to fix vulnerability to eMudhra.

v4.3.2

• 🔐 Updates our dependency pins to certifi==2026.10.19, following the eMudhra Intermediate CA Compromise. Linux builds may still be vulnerable through manylinux images - a patch release will soon follow if so.

Changelog

Sourced from pypa/cibuildwheel's changelog.

v4.3.4

22 October 2026

• 🔐 Warns when a uv build frontend is selected and the host uv is older than 0.13.4, which still trusts the compromised eMudhra CA roots (#3021)
• 🔐 Uses cibuildwheel's CA bundle for pip on Python 3.9, where pip uses its bundled certifi, which still trusts the compromised eMudhra roots (#3017)
• 🔐 Uses cibuildwheel's CA bundle for pip on GraalPy, where truststore is not supported (#3019)
• 🔐 Uses cibuildwheel's CA bundle in Android, iOS, and Pyodide cross venvs, where pip uses the host's OpenSSL CA file (#3020)
• 🐛 Seeds build's isolated environment with the pinned pip on macOS and Windows, fixing GraalPy 25.0 builds (#3018)
• 💼 Stops Azure cache growth from restoreKeys (#3022)

v4.3.3

21 October 2026

• 🔐 Updates manylinux images and pip to fix vulnerability to eMudhra.

v4.3.2

20 October 2026

• 🔐 Updates our dependency pins to certifi==2026.10.19, following the eMudhra Intermediate CA Compromise. Linux builds may still be vulnerable through manylinux images - a patch release will soon follow if so.

Commits

• b9e566a Bump version: v4.3.4
• 0d511ac fix: use cibuildwheel's CA bundle in cross venvs (#3020)
• d6c9b11 feat: warn when uv is too old to have the eMudhra CA fix (#3021)
• 4463120 fix: seed build's isolated env with the pinned pip (#3018)
• 6d4911a fix: use cibuildwheel's CA bundle for pip on GraalPy (#3019)
• 54d1a6f ci: stop Azure cache growth from restoreKeys (#3022)
• 5891574 fix: use cibuildwheel's CA bundle for pip on Python 3.9 (#3017)
• 8c2dcd2 Bump version: v4.3.3
• 56459e6 [Bot] Update dependencies (#3012)
• afd09e6 chore(deps): bump the actions group with 4 updates (#3013)
• Additional commits viewable in compare view

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[codspeed]

Merging this PR will not alter performance

✅ 26 untouched benchmarks

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_{Comparing dependabot/github_actions/pypa/cibuildwheel-4.3.4 (b5fef95) with master (c5efde4)}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.60%. Comparing base (c5efde4) to head (b5fef95).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #875   +/-   ##
=======================================
  Coverage   95.60%   95.60%           
=======================================
  Files          18       18           
  Lines        4141     4141           
=======================================
  Hits         3959     3959           
  Misses        182      182           

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