WebDAV implementation in Yaws web server versions 1.81 to 2.0.7 is vulnerable to XXE injection.
github.com/erlyaws/yaws/commits/master
github.com/vulnbe/poc-yaws-dav-xxe
lists.debian.org/debian-lts-announce/2020/09/msg00022.html
packetstormsecurity.com/files/159106/Yaws-2.0.7-XML-Injection-Command-Injection.html
usn.ubuntu.com/4569-1/
vuln.be/post/yaws-xxe-and-shell-injections/
www.debian.org/security/2020/dsa-4773