/usr/share/perl5/HTML/ is in libhtml-widgets-navmenu-perl 1.0703-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/HTML/Widgets/
/usr/share/perl5/HTML/Widgets/NavMenu/
/usr/share/perl5/HTML/Widgets/NavMenu.pm
/usr/share/perl5/HTML/Widgets/NavMenu/EscapeHtml.pm
/usr/share/perl5/HTML/Widgets/NavMenu/ExpandVal.pm
/usr/share/perl5/HTML/Widgets/NavMenu/HeaderRole.pm
/usr/share/perl5/HTML/Widgets/NavMenu/Iterator/
/usr/share/perl5/HTML/Widgets/NavMenu/Iterator/Base.pm
/usr/share/perl5/HTML/Widgets/NavMenu/Iterator/Html.pm
/usr/share/perl5/HTML/Widgets/NavMenu/Iterator/JQTreeView.pm
/usr/share/perl5/HTML/Widgets/NavMenu/Iterator/NavMenu/
/usr/share/perl5/HTML/Widgets/NavMenu/Iterator/NavMenu.pm
/usr/share/perl5/HTML/Widgets/NavMenu/Iterator/NavMenu/HeaderRole.pm
/usr/share/perl5/HTML/Widgets/NavMenu/Iterator/SiteMap.pm
/usr/share/perl5/HTML/Widgets/NavMenu/JQueryTreeView.pm
/usr/share/perl5/HTML/Widgets/NavMenu/Object.pm
/usr/share/perl5/HTML/Widgets/NavMenu/Predicate.pm
/usr/share/perl5/HTML/Widgets/NavMenu/TagGen.pm
/usr/share/perl5/HTML/Widgets/NavMenu/Tree/
/usr/share/perl5/HTML/Widgets/NavMenu/Tree/Iterator/
/usr/share/perl5/HTML/Widgets/NavMenu/Tree/Iterator.pm
/usr/share/perl5/HTML/Widgets/NavMenu/Tree/Iterator/Item.pm
/usr/share/perl5/HTML/Widgets/NavMenu/Tree/Iterator/Stack.pm
/usr/share/perl5/HTML/Widgets/NavMenu/Tree/Node.pm
/usr/share/perl5/HTML/Widgets/NavMenu/Url.pm