sys-apps/
coreutils

Standard GNU utilities (chmod, cp, dd, ls, sort, tr, head, wc, who,...)

https://www.gnu.org/software/coreutils/

There are no open security bugs.

You think something is missing here?
Start with filling a new security bug.

Please file new vulnerability reports on Gentoo Bugzilla and assign them to the Gentoo Security product and Vulnerabilities component.