There is a File Content Disclosure vulnerability in Action View <5.2.2.1, <5.1.6.2, <5.0.7.2, <4.2.11.1 and v3 where specially crafted accept headers can cause contents of arbitrary files on the target system's filesystem to be exposed.
https://lists.debian.org/debian-lts-announce/2019/03/msg00042.html
https://access.redhat.com/errata/RHSA-2019:1289
https://access.redhat.com/errata/RHSA-2019:1149
https://access.redhat.com/errata/RHSA-2019:1147
https://access.redhat.com/errata/RHSA-2019:0796
http://www.openwall.com/lists/oss-security/2019/03/22/1
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00011.html