CVE-2011-2509

Multiple cross-site scripting (XSS) vulnerabilities in Joomla! before 1.6.4 allow remote attackers to inject arbitrary web script or HTML via (1) the query string to the com_contact component, as demonstrated by the Itemid parameter to index.php; (2) the query string to the com_content component, as demonstrated by the filter_order parameter to index.php; (3) the query string to the com_newsfeeds component, as demonstrated by an arbitrary parameter to index.php; or (4) the option parameter in a reset.request action to index.php; and, when Internet Explorer or Konqueror is used, (5) allow remote attackers to inject arbitrary web script or HTML via the searchword parameter in a search action to index.php in the com_search component.

We have discovered 195,642 live websites that are affected by CVE-2011-2509.

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Affected Software

Product	Joomla
Category	Content Management System
Vulnerable Domains	195,642 live websites (95% of Joomla install base)
Vulnerable Versions	from 0 through 1.6.4
Vulnerable Versions Count	1 versions ( 0.97% of all versions)