A mingw-python3 security update has been released for Fedora 34.

SECURITY: Fedora 34 Update: mingw-python3-3.9.4-3.fc34

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Fedora Update Notification
FEDORA-2021-eef0654c0b
2021-09-30 01:12:40.914557
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Name : mingw-python3
Product : Fedora 34
Version : 3.9.4
Release : 3.fc34
URL :   https://www.python.org/
Summary : MinGW Windows python3
Description :
MinGW Windows python3 library.

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Update Information:

Backport patches for CVE-2021-3737 and CVE-2021-3733
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ChangeLog:

* Tue Sep 21 2021 Sandro Mani - 3.9.4-3
- Backport patch for CVE-2021-3737
* Tue Sep 21 2021 Sandro Mani - 3.9.4-2
- Backport patch for CVE-2021-3733
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References:

[ 1 ] Bug #1997670 - CVE-2021-3737 mingw-python3: python: client can enter an infinite loop on a 100 Continue response from the server [fedora-all]
  https://bugzilla.redhat.com/show_bug.cgi?id=1997670
[ 2 ] Bug #2000683 - CVE-2021-3733 mingw-python3: python: Denial of service when identifying crafted invalid RFCs [fedora-all]
  https://bugzilla.redhat.com/show_bug.cgi?id=2000683
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2021-eef0654c0b' at the command
line. For more information, refer to the dnf documentation available at
  http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
  https://fedoraproject.org/keys