The WP GeoNames plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'wp-geonames' shortcode in all versions up to, and including, 1.9.0.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Jacques Malgrange WP GeoNames allows Reflected XSS.This issue affects WP GeoNames: from n/a through 1.8.