A path traversal flaw was found in WildFly's domain mode
  implementation. The LocalFileRepository.getFile() and
  getConfigurationFile() methods in
  wildfly-core/deployment-repository do not validate that the
  resolved file path remains within the configured repository or
  configuration root directories. A remote attacker who has
  obtained the slave host controller secret or compromised a slave
  host controller can supply a crafted relative path containing
  directory traversal sequences (e.g., ../../etc/passwd) via the
  slave-DC wire protocol, causing the Domain Controller to resolve
  and serve arbitrary files readable by the DC process. This leads
  to unauthorized disclosure of sensitive information such as
  configuration files, keystores, and system credentials.