The Social Sharing Plugin – Sassy Social Share plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugins Sassy_Social_Share shortcode in all versions up to, and including, 3.3.58 due to insufficient input sanitization and output escaping on user supplied attributes such as url. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.