CVE-2011-5257: Appthemes Classipress

Medium severity, CVSS 4.3. EPSS: 3.8% chance of exploitation in the next 30 days.

Multiple cross-site scripting (XSS) vulnerabilities in the Classipress theme before 3.1.5 for WordPress allow remote attackers to inject arbitrary web script or HTML via the (1) twitter_id parameter related to the Twitter widget and (2) facebook_id parameter related to the Facebook widget.

Affected products

• Appthemes Classipress: up to and including 3.1.4; version 3.0.5.2 only; version 3.0.5.3 only; version 3.1.3 only; version 3.1.5 only

Published 2013-02-12. Last modified 2026-06-16.