A snakeyaml security update has been released for Fedora 31.

SECURITY: Fedora 31 Update: snakeyaml-1.26-1.fc31

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Fedora Update Notification
FEDORA-2020-23012fafbc
2020-04-26 02:47:56.787503
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Name : snakeyaml
Product : Fedora 31
Version : 1.26
Release : 1.fc31
URL :   https://bitbucket.org/asomov/snakeyaml
Summary : YAML parser and emitter for Java
Description :
SnakeYAML features:
* a complete YAML 1.1 parser. In particular,
SnakeYAML can parse all examples from the specification.
* Unicode support including UTF-8/UTF-16 input/output.
* high-level API for serializing and deserializing
native Java objects.
* support for all types from the YAML types repository.
* relatively sensible error messages.

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Update Information:

Update to version 1.26. Resolves CVE-2017-18640.
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ChangeLog:

* Wed Apr 15 2020 Severin Gehwolf - 1.26-1
- Update to latest upstream 1.26 release.
- Resolves: CVE-2017-18640
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References:

[ 1 ] Bug #1785377 - CVE-2017-18640 snakeyaml: the alias feature allows entity expansion during a load operation [fedora-all]
  https://bugzilla.redhat.com/show_bug.cgi?id=1785377
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2020-23012fafbc' 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