Mutt is vulnerable to denial of service. An out-of-bounds read in imap/util.c
where an IMAP sequence set ends with a comma could result in disclosure of confidential information or an application crash.
lists.mutt.org/pipermail/mutt-announce/Week-of-Mon-20210503/000036.html
github.com/neomutt/neomutt/commit/fa1db5785e5cfd9d3cd27b7571b9fe268d2ec2dc
gitlab.com/muttmua/mutt/-/commit/7c4779ac24d2fb68a2a47b58c7904118f40965d5
security-tracker.debian.org/tracker/CVE-2021-32055
security.gentoo.org/glsa/202105-05