A firefox security update has been released for Fedora 31.

SECURITY: Fedora 31 Update: firefox-78.0.1-1.fc31

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Fedora Update Notification
FEDORA-2020-8ba9376229
2020-07-08 01:05:15.752678
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Name : firefox
Product : Fedora 31
Version : 78.0.1
Release : 1.fc31
URL :   https://www.mozilla.org/firefox/
Summary : Mozilla Firefox Web browser
Description :
Mozilla Firefox is an open-source web browser, designed for standards
compliance, performance and portability.

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Update Information:

Update to latest upstream version
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ChangeLog:

* Wed Jul 1 2020 Jan Horak - 78.0.1-1
- Update to 78.0.1 build1
* Wed Jul 1 2020 Martin Stransky - 78.0-2
- Add 'Open the Profile Manager' desktop file entry
* Mon Jun 29 2020 Jan Horak - 78.0-1
- Update to 78.0 build2
* Tue Jun 23 2020 Martin Stransky - 77.0.1-3
- Build with PGO/LTO again.
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2020-8ba9376229' 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