Those are expedited security releases, recommended to all users. Get them here:
https://www.python.org/downloads/release/python-393/
<https://www.python.org/downloads/release/python-393/>
https://www.python.org/downloads/release/python-389/
<https://www.python.org/downloads/release/python-389/>
Security Content
bpo-43631 <https://bugs.python.org/issue43631>: high-severity CVE-2021-3449 and
CVE-2021-3450 were published for OpenSSL, it’s been upgraded to 1.1.1k in CI,
and macOS and Windows installers.
bpo-42988 <https://bugs.python.org/issue42988>: CVE-2021-3426: Remove the
getfile feature of the pydoc module which could be abused to read arbitrary
files on the disk (directory traversal vulnerability). Moreover, even source
code of Python modules can contain sensitive data like passwords. Vulnerability
reported by David Schwörer.
bpo-43285 <https://bugs.python.org/issue43285>: ftplib no longer trusts the IP
address value returned from the server in response to the PASV command by
default. This prevents a malicious FTP server from using the response to probe
IPv4 address and port combinations on the client network. Code that requires
the former vulnerable behavior may set a trust_server_pasv_ipv4_address
attribute on their ftplib.FTP instances to True to re-enable it.
bpo-43439 <https://bugs.python.org/issue43439>: Add audit hooks for
gc.get_objects(), gc.get_referrers() and gc.get_referents(). Patch by Pablo
Galindo.
<https://discuss.python.org/t/python-3-9-3-and-3-8-9-are-now-available/8024#release-calendar>Release
Calendar
Due to the security fixes, those releases are made a month sooner than planned.
I decided to keep the release calendar intact, meaning that the last full
regular maintenance release of Python 3.8 is still planned for May 3rd 2021,
after which it will shift to source releases only for security bug fixes only.
Maintenance releases for the 3.9 series will continue at regular bi-monthly
intervals, with 3.9.3 planned for May 3rd 2021 as well.
<https://discuss.python.org/t/python-3-9-3-and-3-8-9-are-now-available/8024#whats-new>What’s
new?
The Python 3.9 series contains many new features and optimizations over 3.8.
See the “What’s New in Python 3.9
<https://docs.python.org/3.9/whatsnew/3.9.html>” document for more information
about features included in the 3.9 series. We also have a detailed change log
for 3.9.3 <https://docs.python.org/release/3.9.3/whatsnew/changelog.html>
specifically.
Detailed information about all changes made in version 3.8.9 can be found in
its respective changelog
<https://docs.python.org/release/3.8.9/whatsnew/changelog.html>.
<https://discuss.python.org/t/python-3-9-3-and-3-8-9-are-now-available/8024#we-hope-you-enjoy-those-new-releases>We
hope you enjoy those new releases!
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 organization contributions to the Python Software
Foundation.
Your friendly release team,
Ned Deily @nad <https://discuss.python.org/u/nad>
Steve Dower @steve.dower <https://discuss.python.org/u/steve.dower>
Łukasz Langa @ambv <https://discuss.python.org/u/ambv>
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