HTML::Scrubber uses HTML::Parser under the hood, and makes it extremely simple to allow/disallow tags. As tanktalus says above, you will be better off choosing what tags to allow.

From the pod:

#!/usr/bin/perl -w
use HTML::Scrubber;
use strict;

my $html = q[
<style type="text/css"> BAD { background: #666; color: #666;} </style>
<script language="javascript"> alert("Hello, I am EVIL!");
</script>
<HR>
    a   => <a href=1>link </a>
    br  => <br>
    b   => <B> bold </B>
    u   => <U> UNDERLINE </U>
];

my $scrubber = HTML::Scrubber->new( allow => [ qw[ p b i u hr br ] ] )
+;
print $scrubber->scrub($html);

$scrubber->deny( qw[ p b i u hr br ] );
print $scrubber->scrub($html);
__END__
Output:
<hr>
    a   =&gt; link
    br  =&gt; <br>
    b   =&gt; <b> bold </b>
    u   =&gt; <u> UNDERLINE </u>

    a   =&gt; link
    br  =&gt;
    b   =&gt;  bold
    u   =&gt;  UNDERLINE
[download]

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.