full-disclosure - Fw: W3C HTML Validator XSS Hole

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Message-ID: <000d01c25c2c$a5d4d360$e62d1c41@kc.rr.com>
From: mattmurphy at kc.rr.com (Matthew Murphy)
Subject: Fw: W3C HTML Validator XSS Hole

A vulnerability exists in the W3C HTML validator that allows for cross-site
scripting.  I haven't really studied the impacts of this much, but it could
be used (in theory) to gain access to the member area data for the user (the
member area uses Basic authentication):

http://validator.w3.org/check?charset=%28detect+automatically%29&doctype=%28
detect+automatically%29&uri=http%3A%2F%2F%3CSCRIPT%3Ealert%28document.URL%29
%3C%2FSCRIPT%3E