Security researcher MustLive, has submitted on 22/09/2007 a cross-site-scripting (XSS) vulnerability affecting search.mi5.gov.uk, which at the time of submission ranked 286957 on the web according to Alexa.
We manually validated and published a mirror of this vulnerability on 22/09/2007. It is currently unfixed.
If you believe that this security issue has been corrected, please send us an e-mail.