GNU Midnight Commander is a text based file manager.
GNU Midnight Commander does not properly sanitize environment variables.
A remote attacker could entice a user to open a specially crafted archive file using GNU Midnight Commander, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition.
There is no known workaround at this time.
All GNU Midnight Commander users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-misc/mc-4.8.7"