/usr/lib/libxmlsec1-nss.so.1 is in libxmlsec1-nss 1.2.18-2ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libxmlsec1-nss.so.1.2.18
/usr/lib/libxmlsec1-nss.so.1.2.18