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WordPress WP-UserOnline plugin URL HTML Injection Vulnerability (deprecated)



The remote web server hosts a web application that is vulnerable to an HTML-injection vulnerability.


The remote web server hosts WordPress with the WP-UserOnline plugin, a plugin to display how many users are online with detailed statistics.

Versions of WP-UserOnline earlier than 2.70 are potentially affected by an HTML-injection vulnerability. An attacker, exploiting this flaw, could potentially execute arbitrary script code in a user's browser.


Upgrade to WP-UserOnline 2.70 or later.