helvis 1.8h2_1 and earlier stores recovery files in world readable directories with world readable permissions, which allows local users to read the recovered files of other users.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2005-0119
http://www.vuxml.org/freebsd/bb99f803-5fde-11d9-b721-00065be4b5b6.html