Multiple cross-site scripting (XSS) vulnerabilities in WikyBlog before 1.7.1 allow remote attackers to inject arbitrary web script or HTML via the (1) key parameter to index.php/Special/Main/keywordSearch, (2) revNum parameter to index.php/Edit/Main/Home, (3) to parameter to index.php/Special/Main/WhatLinksHere, (4) user parameter to index.php/Special/Main/UserEdits, and (5) the PATH_INFO to index.php.