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Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2022080005

Below is a copy:

WordPress Plugin WP-UserOnline 2.87.6 Stored Cross-Site Scripting (XSS)
# Exploit Title: WordPress Plugin WP-UserOnline 2.87.6 - Stored Cross-Site Scripting (XSS)
# Date: 21/07/2022
# Exploit Author: Steffin Stanly
# Vendor Homepage: https://github.com/lesterchan/wp-useronline
# Software Link: https://wordpress.org/plugins/wp-useronline/
# Version: <=2.87.6
# Tested on Windows

How to reproduce vulnerability:

1. Install WordPress 6.0.1
2. Install and activate WP-UserOnline plugin.
3. Navigate to Setting >> WP-UserOnline and enter the data into the User(s) Browsing Site.
4. Add the following payload "><script>alert(1)</script> and save changes
5. On visiting the dashboard, You will observe that the payload successfully got stored in the database and when you are triggering the same functionality in that time JavaScript payload is executing successfully and we are getting a pop-up.

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