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.
https://www.oracle.com/security-alerts/cpuapr2020.html
https://usn.ubuntu.com/3600-2/
https://usn.ubuntu.com/3600-1/
https://usn.ubuntu.com/3566-1/
https://lists.debian.org/debian-lts-announce/2018/01/msg00025.html
https://bugs.php.net/bug.php?id=74782
https://access.redhat.com/errata/RHSA-2019:2519
https://access.redhat.com/errata/RHSA-2018:1296
http://www.securitytracker.com/id/1040363
http://www.securityfocus.com/bid/104020
http://www.securityfocus.com/bid/102742