WordPress Advanced Text Widget Plugin 'page' Parameter Cross Site Scripting Vulnerability
Advanced Text Widget plugin for WordPress is prone to a cross-site-scripting vulnerability because it fails to properly sanitize user-supplied input.
An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks.
Advanced Text Widget 2.0.0 is vulnerable; other versions may also be affected.
UPDATE Apr 18, 2012: Further reports indicate the issue reported may not be valid. This BID will be updated as more information emerges.