An issue was discovered in NeoMutt before 2018-07-16. newsrc.c does not properly restrict '/' characters that may have unsafe interaction with cache pathnames.
{ "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "binary_version": "20171215+dfsg.1-1ubuntu0.1~esm1", "binary_name": "neomutt" }, { "binary_version": "20171215+dfsg.1-1ubuntu0.1~esm1", "binary_name": "neomutt-dbgsym" } ] }