A Stored XSS Vulnerability was discovered in WordPress plugin, WP-UserOnline, by security researcher Steffin Stanly. With over 20,000 Active Installations, site administrators are urged to update to the latest available version ( 2.88.0 ) which addresses this vulnerability.
Exploit Author: Steffin Stanly
Vendor Homepage: https://github.com/lesterchan/wp-useronline
Software Link: https://wordpress.org/plugins/wp-useronline/
Tested on Windows
How to reproduce vulnerability:
- Install WordPress 6.0.1 2.
- Install and activate WP-UserOnline plugin.
- Navigate to Setting >> WP-UserOnline and enter the data into the User(s) Browsing Site.
- Add the following payload, and save changes.
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