Ansible fetch module before versions 2.5.15, 2.6.14, 2.7.8 has a path traversal vulnerability which allows copying and overwriting files outside of the specified destination in the local ansible controller host, by not restricting an absolute path.
https://usn.ubuntu.com/4072-1/
https://github.com/ansible/ansible/pull/52133
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3828
https://access.redhat.com/errata/RHSA-2019:3789
https://access.redhat.com/errata/RHSA-2019:3744
http://packetstormsecurity.com/files/172837/Ansible-Fetch-Path-Traversal.html
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00020.html
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00077.html
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00021.html