Awstats version 7.6 and earlier is vulnerable to a path traversal flaw in the handling of the "config" and "migrate" parameters resulting in unauthenticated remote code execution.
https://www.debian.org/security/2018/dsa-4092
https://security.gentoo.org/glsa/202007-37
https://lists.debian.org/debian-lts-announce/2018/01/msg00012.html
https://github.com/eldy/awstats/commit/cf219843a74c951bf5986f3a7fffa3dcf99c3899
https://github.com/eldy/awstats/commit/06c0ab29c1e5059d9e0279c6b64d573d619e1651