An issue was discovered in PHP before 5.6.33, 7.0.x before 7.0.27, 7.1.x before 7.1.13, and 7.2.x before 7.2.1. There is Reflected XSS on the PHAR 404 error page via the URI of a request for a .phar file.
http://php.net/ChangeLog-5.php
http://php.net/ChangeLog-7.php
https://access.redhat.com/errata/RHSA-2018:1296
https://access.redhat.com/errata/RHSA-2019:2519
https://bugs.php.net/bug.php?id=74782
https://lists.debian.org/debian-lts-announce/2018/01/msg00025.html
https://usn.ubuntu.com/3566-1/
https://usn.ubuntu.com/3600-1/
https://usn.ubuntu.com/3600-2/