A seamonkey security update has been released for Fedora 34.

SECURITY: Fedora 34 Update: seamonkey-2.53.7-2.fc34

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Fedora Update Notification
FEDORA-2021-df093b89ba
2021-04-06 14:01:06.707242
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Name : seamonkey
Product : Fedora 34
Version : 2.53.7
Release : 2.fc34
URL :   http://www.seamonkey-project.org
Summary : Web browser, e-mail, news, IRC client, HTML editor
Description :
SeaMonkey is an all-in-one Internet application suite (previously made
popular by Netscape and Mozilla). It includes an Internet browser,
advanced e-mail, newsgroup and feed client, a calendar, IRC client,
HTML editor and a tool to inspect the DOM for web pages. It is derived
from the application formerly known as Mozilla Application Suite.

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Update Information:

Fix updating and support of legacy javascript extensions. ---- Update to
2.53.7 Enable support for module scripts. (To turn it off, toggle
"dom.moduleScripts.enabled" in about:config). For sending mail, now
"Thunderbird" is advertised in User-Agent header instead of "Firefox" (if any).
Some performance fixes, including from upcoming releases.
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ChangeLog:

* Fri Apr 2 2021 Dmitry Butskoy 2.53.7-2
- fix obsoleting "for each" javascript statements support
- no need to provide own dictionaries (system are used anyway)
* Tue Mar 30 2021 Dmitry Butskoy 2.53.7-1
- update to 2.53.7
- fix keyboard input with gtk3 >= 3.24.26 (mozbz #1701288)
- backport some refresh driver improvements from upcoming 2.53.8
- avoid spurious update of intersection observers in a case
of throbber animation
- restore traditional security-button background (to match the location bar
highlighting, revert mozbz #1593550)
- for new installs add about:addons to the initial pages and
don't enable inspector and calendar there by default
- enable upcoming module scripts support
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References:

[ 1 ] Bug #1944532 - seamonkey-2.53.7.source is available
  https://bugzilla.redhat.com/show_bug.cgi?id=1944532
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2021-df093b89ba' 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