A libxls security update has been released for Fedora 33.

SECURITY: Fedora 33 Update: libxls-1.6.1-2.fc33

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Fedora Update Notification
FEDORA-2020-ad84def381
2020-12-12 01:03:49.584509
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Name : libxls
Product : Fedora 33
Version : 1.6.1
Release : 2.fc33
URL :   https://github.com/libxls/libxls
Summary : Read binary Excel files from C/C++
Description :
This is libxls, a C library for reading Excel files in the old binary OLE
format, plus a command-line tool for converting XLS to CSV (named,
appropriately enough, libxls2csv).

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Update Information:

Security fix for CVE-2020-27819
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ChangeLog:

* Tue Dec 1 2020 Elliott Sales de Andrade - 1.6.1-2
- Fix CVE-2020-27819
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References:

[ 1 ] Bug #1903296 - CVE-2020-27819 libxls: NULL pointer dereference via crafted xls file
  https://bugzilla.redhat.com/show_bug.cgi?id=1903296
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2020-ad84def381' 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