An issue was discovered in Mutt before 1.10.1 and NeoMutt before 2018-07-16. imap/command.c mishandles a long IMAP status mailbox literal count size.
https://www.debian.org/security/2018/dsa-4277
https://usn.ubuntu.com/3719-3/
https://security.gentoo.org/glsa/201810-07
https://neomutt.org/2018/07/16/release
https://lists.debian.org/debian-lts-announce/2018/08/msg00001.html
https://gitlab.com/muttmua/mutt/commit/e57a8602b45f58edf7b3ffb61bb17525d75dfcb1
https://github.com/neomutt/neomutt/commit/3c49c44be9b459d9c616bcaef6eb5d51298c1741