Filter style tag content

[klukackova]

According to the documentation style attributes can be filtered using CSS filter. How can I filter also values between style tags not only attributes? E.g. <STYLE>.XSS{background-image:url("javascript:alert('XSS')");}</STYLE> is not filtered at all.

[Zhxhh]

I have tried that

[leizongmin]

There is a package names cssfilter can filter style attribute, but filter CSS style from <style> tag is more complex than HTML, so this package xss currently does not supported this feature.