The mxml_write_node function in mxml-file.c in mxml 2.9, 2.7, and possibly earlier allows remote attackers to cause a denial of service (stack consumption) via crafted xml file.
https://lists.debian.org/debian-lts-announce/2019/01/msg00018.html
https://bugzilla.redhat.com/show_bug.cgi?id=1334648
http://www.securityfocus.com/bid/90315