Two more, just three days after the last? Yes!

We found some regressions, so here’s an expedited pair of releases. They also come with some bonus security fixes.

Python 3.14.2

www.python.org/downloads/release/python-3142/

Python 3.14.2 is the second maintenance release of 3.14, containing 18 bugfixes, build improvements and documentation changes since 3.14.1.

This is an expedited release to fix the following regressions:

• gh-142206: Exceptions in multiprocessing in running programs while upgrading Python.

• gh-142214: Exceptions in dataclasses without __init__ method.

• gh-142218: Segmentation faults and assertion failures in insertdict.

• gh-140797: Crash when using multiple capturing groups in re.Scanner

And these security fixes:

• gh-142145: Remove quadratic behavior in node ID cache clearing (CVE-2025-12084)

• gh-119452: Fix a potential virtual memory allocation denial of service in http.server

See the full changelog.

Python 3.13.11

www.python.org/downloads/release/python-31311/

Python 3.13.11 is the eleventh maintenance release of 3.13. This is an expedited release to fix the following regressions:

• gh-142206: Exceptions in multiprocessing in running programs while upgrading Python.

• gh-142218: Segmentation faults and assertion failures in insertdict.

• gh-140797: Crash when using multiple capturing groups in re.Scanner

And these security fixes:

• gh-142145: Remove quadratic behavior in node ID cache clearing (CVE-2025-12084)

• gh-119451: Fix a potential denial of service in http.client

• gh-119452: Fix a potential virtual memory allocation denial of service in http.server

See the full changelog.

Enjoy the new release

Thanks to all of the many volunteers who help make Python Development and these releases possible! Please consider supporting our efforts by volunteering yourself or through organisation contributions to the Python Software Foundation.

Regards from deeper darker Helsinki,

Your release team,
Hugo van Kemenade
Thomas Wouters
Ned Deily
Steve Dower
Łukasz Langa