The Flower Delivery by Florist One plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'flower-delivery' shortcode in all versions up to, and including, 3.9 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.

The Flower Delivery by Florist One WordPress plugin through 3.7 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks when the unfiltered_html capability is disallowed (for example in multisite setups)