Simple Banner WordPress Plugin Stored Cross-Site Scripting Vulnerability

A stored cross-site scripting vulnerability has been identified in the Simple Banner WordPress plugin, specifically in versions through 3.0.10. The issue arises from inadequate input sanitization and output escaping, allowing authenticated attackers with administrator-level access to inject arbitrary scripts. This vulnerability is active in multi-site installations where the unfiltered_html capability is disabled.

Impact

Exploitation of this vulnerability allows for stored cross-site scripting, where injected scripts are executed when users access the affected pages.

Remediation

Users can update to version 3.1.0 or a newer patched version to address this vulnerability.