/usr/share/xcache/htdocs/common/ is in php5-xcache 3.2.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/xcache/htdocs/common/common.css
/usr/share/xcache/htdocs/common/common.php
/usr/share/xcache/htdocs/common/footer.tpl.php
/usr/share/xcache/htdocs/common/header.tpl.php
/usr/share/xcache/htdocs/common/lang/
/usr/share/xcache/htdocs/common/lang/en.php
/usr/share/xcache/htdocs/common/lang/en.po
/usr/share/xcache/htdocs/common/lang/zh-simplified.php
/usr/share/xcache/htdocs/common/lang/zh-simplified.po
/usr/share/xcache/htdocs/common/lang/zh-traditional.php
/usr/share/xcache/htdocs/common/lang/zh-traditional.po
/usr/share/xcache/htdocs/common/tablesort.js
/usr/share/xcache/htdocs/common/xcache.png