s2Member WordPress Plugin Reflected Cross-Site Scripting Vulnerability

A reflected cross-site scripting vulnerability has been identified in the s2Member WordPress plugin, specifically in versions through 241216. The issue arises from the plugin's use of the add_query_arg function without proper escaping, allowing unauthenticated attackers to inject arbitrary scripts. These scripts could be executed if a user is tricked into clicking a link that contains the injected script.

Impact

Exploitation of this vulnerability allows for reflected cross-site scripting, where an attacker can inject scripts that are executed in the context of the user's browser.

Remediation

Users can update to version 250214 or a newer patched version to address this vulnerability.