WordPress · Popup Box Wordpress Plugin · CVE-2023-5809
**Name of the Vulnerable Software and Affected Versions**
Popup box WordPress plugin versions prior to 3.8.6
**Description**
The issue allows high privilege users, such as admins, to perform Stored Cross-Site Scripting attacks, even when the unfiltered html capability is disallowed, for example, in a multisite setup. This is due to the plugin not sanitizing and escaping some of its settings.
**Recommendations**
For versions prior to 3.8.6, update to version 3.8.6 or later to resolve the issue. As a temporary workaround, consider restricting the use of the plugin's settings to minimize the risk of exploitation.