/usr/lib/x86_64-linux-gnu/libxslt.so is in libxslt1-dev 1.1.26-8ubuntu1.4.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/x86_64-linux-gnu/libxslt.so.1.1.26
/usr/lib/x86_64-linux-gnu/libxslt.so.1.1.26