A php-symfony3 security update has been released for Fedora 34.

SECURITY: Fedora 34 Update: php-symfony3-3.4.49-1.fc34

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Fedora Update Notification
FEDORA-2021-c57937ab9f
2021-05-29 01:04:01.502342
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Name : php-symfony3
Product : Fedora 34
Version : 3.4.49
Release : 1.fc34
URL :   https://symfony.com
Summary : Symfony PHP framework (version 3)
Description :
Symfony PHP framework (version 3).

NOTE: Does not require PHPUnit bridge.

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Update Information:

**Version 3.4.49** (2021-05-19) * security **CVE-2021-21424** [Security\Core]
Fix user enumeration via response body on invalid credentials (chalasr) ----
**Version 3.4.48** (2021-05-12) * security **CVE-2021-21424**
[Security][Guard] Prevent user enumeration (chalasr)
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ChangeLog:

* Wed May 19 2021 Remi Collet - 3.4.49-1
- update to 3.4.49
* Mon May 17 2021 Remi Collet - 3.4.48-1
- update to 3.4.48
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References:

[ 1 ] Bug #1960631 - CVE-2021-21424 php-symfony: user enumeration in authentication mechanisms [fedora-all]
  https://bugzilla.redhat.com/show_bug.cgi?id=1960631
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2021-c57937ab9f' 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