/usr/share/perl5/HTML/ is in libhtml-widget-perl 1.11-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/HTML/Widget/
/usr/share/perl5/HTML/Widget.pm
/usr/share/perl5/HTML/Widget/Accessor.pm
/usr/share/perl5/HTML/Widget/BlockContainer.pm
/usr/share/perl5/HTML/Widget/Constraint/
/usr/share/perl5/HTML/Widget/Constraint.pm
/usr/share/perl5/HTML/Widget/Constraint/ASCII.pm
/usr/share/perl5/HTML/Widget/Constraint/All.pm
/usr/share/perl5/HTML/Widget/Constraint/AllOrNone.pm
/usr/share/perl5/HTML/Widget/Constraint/Any.pm
/usr/share/perl5/HTML/Widget/Constraint/Bool.pm
/usr/share/perl5/HTML/Widget/Constraint/Callback.pm
/usr/share/perl5/HTML/Widget/Constraint/CallbackOnce.pm
/usr/share/perl5/HTML/Widget/Constraint/Date.pm
/usr/share/perl5/HTML/Widget/Constraint/DateTime.pm
/usr/share/perl5/HTML/Widget/Constraint/DependOn.pm
/usr/share/perl5/HTML/Widget/Constraint/Email.pm
/usr/share/perl5/HTML/Widget/Constraint/Equal.pm
/usr/share/perl5/HTML/Widget/Constraint/HTTP.pm
/usr/share/perl5/HTML/Widget/Constraint/In.pm
/usr/share/perl5/HTML/Widget/Constraint/Integer.pm
/usr/share/perl5/HTML/Widget/Constraint/Length.pm
/usr/share/perl5/HTML/Widget/Constraint/Maybe.pm
/usr/share/perl5/HTML/Widget/Constraint/Number.pm
/usr/share/perl5/HTML/Widget/Constraint/Printable.pm
/usr/share/perl5/HTML/Widget/Constraint/Range.pm
/usr/share/perl5/HTML/Widget/Constraint/Regex.pm
/usr/share/perl5/HTML/Widget/Constraint/SingleValue.pm
/usr/share/perl5/HTML/Widget/Constraint/String.pm
/usr/share/perl5/HTML/Widget/Constraint/Time.pm
/usr/share/perl5/HTML/Widget/Container.pm
/usr/share/perl5/HTML/Widget/Element/
/usr/share/perl5/HTML/Widget/Element.pm
/usr/share/perl5/HTML/Widget/Element/Block.pm
/usr/share/perl5/HTML/Widget/Element/Button.pm
/usr/share/perl5/HTML/Widget/Element/Checkbox.pm
/usr/share/perl5/HTML/Widget/Element/Fieldset.pm
/usr/share/perl5/HTML/Widget/Element/Hidden.pm
/usr/share/perl5/HTML/Widget/Element/NullContainer.pm
/usr/share/perl5/HTML/Widget/Element/Password.pm
/usr/share/perl5/HTML/Widget/Element/Radio.pm
/usr/share/perl5/HTML/Widget/Element/RadioGroup.pm
/usr/share/perl5/HTML/Widget/Element/Reset.pm
/usr/share/perl5/HTML/Widget/Element/Select.pm
/usr/share/perl5/HTML/Widget/Element/Span.pm
/usr/share/perl5/HTML/Widget/Element/Submit.pm
/usr/share/perl5/HTML/Widget/Element/Textarea.pm
/usr/share/perl5/HTML/Widget/Element/Textfield.pm
/usr/share/perl5/HTML/Widget/Element/Upload.pm
/usr/share/perl5/HTML/Widget/Error.pm
/usr/share/perl5/HTML/Widget/Filter/
/usr/share/perl5/HTML/Widget/Filter.pm
/usr/share/perl5/HTML/Widget/Filter/Callback.pm
/usr/share/perl5/HTML/Widget/Filter/HTMLEscape.pm
/usr/share/perl5/HTML/Widget/Filter/HTMLStrip.pm
/usr/share/perl5/HTML/Widget/Filter/LowerCase.pm
/usr/share/perl5/HTML/Widget/Filter/TrimEdges.pm
/usr/share/perl5/HTML/Widget/Filter/UpperCase.pm
/usr/share/perl5/HTML/Widget/Filter/Whitespace.pm
/usr/share/perl5/HTML/Widget/Manual/
/usr/share/perl5/HTML/Widget/Manual/Developer.pod
/usr/share/perl5/HTML/Widget/Result.pm