Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Log4j is only used for the tests and in the flexmark-docx-converter module. We do not build the flexmark-docx-converter module in Fedora because we do not have the docx4j dependency. Inputs to log4j are strictly controlled by the tests and so are not vulnerable.