Wordpress Securimage-WP Plugin v3.2.4 URI-based XSS Vulnerability Vendor: Securimage PHP CAPTCHA Product web page: https://wordpress.org/extend/plugins/securimage-wp/ Affected version: 3.2.4 Summary: Securimage-WP adds powerful CAPTCHA protection to comment forms on posts and pages to help prevent comment spam from getting onto your site. Desc: Securimage-WP suffers from a XSS issue in 'siwp_test.php' that uses the 'PHP_SELF' variable. The vulnerability is present because there isn't any filtering to the mentioned variable in the affected script. Attackers can exploit this weakness to execute arbitrary HTML and script code in a user's browser session. Tested on: Microsoft Windows 7 Ultimate SP1 (EN) Apache 2.4.2 (Win32) PHP 5.4.7 MySQL 5.5.25a Vulnerability discovered by Gjoko 'LiquidWorm' Krstic @zeroscience Advisory ID: ZSL-2013-5140 Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2013-5140.php 24.04.2013 -- http://localhost/wordpress/wp-content/plugins/securimage-wp/siwp_test.php/"/><script>alert(document.cookie);</script>?tested=1