A cyrus-sasl security update has been released for Fedora 31.

SECURITY: Fedora 31 Update: cyrus-sasl-2.1.27-3.fc31

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Fedora Update Notification
FEDORA-2020-bf829f9a84
2020-04-04 03:21:32.791388
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Name : cyrus-sasl
Product : Fedora 31
Version : 2.1.27
Release : 3.fc31
URL :   https://www.cyrusimap.org/sasl/
Summary : The Cyrus SASL library
Description :
The cyrus-sasl package contains the Cyrus implementation of SASL.
SASL is the Simple Authentication and Security Layer, a method for
adding authentication support to connection-based protocols.

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Update Information:

Security fix for CVE 2019 19906
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ChangeLog:

* Thu Mar 19 2020 Simo Sorce - 2.1.27-3
- Fix CVE 2019 19906
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References:

[ 1 ] Bug #1791854 - CVE-2019-19906 cyrus-sasl: denial of service in _sasl_add_string function
  https://bugzilla.redhat.com/show_bug.cgi?id=1791854
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2020-bf829f9a84' 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