A grub2 security update has been released for Fedora 31.

SECURITY: Fedora 31 Update: grub2-2.02-110.fc31

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Fedora Update Notification
FEDORA-2020-e19b87f4f5
2020-09-27 01:04:48.987007
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Name : grub2
Product : Fedora 31
Version : 2.02
Release : 110.fc31
URL :   http://www.gnu.org/software/grub/
Summary : Bootloader with support for Linux, Multiboot and more
Description :

The GRand Unified Bootloader (GRUB) is a highly configurable and
customizable bootloader with modular architecture. It supports a rich
variety of kernel formats, file systems, computer architectures and
hardware devices.

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Update Information:

grub2 updates for boothole vulnerabilities in f31/f32.
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ChangeLog:

* Mon Aug 10 2020 Peter Jones - 2.02-110
- Attempt to enable dual-signing in f31
* Wed Jul 29 2020 Peter Jones - 2.02-110
- "Minor" bug fixes
CVE-2020-10713
CVE-2020-14308
CVE-2020-14309
CVE-2020-14310
CVE-2020-14311
CVE-2020-15705
CVE-2020-15706
CVE-2020-15707
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2020-e19b87f4f5' 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