Exxp <= 2.6.9 is vulnerable to Auth. Stored Cross Site Scripting (XSS) vulnerability

The Exxp plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 2.6.9 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers with subscriber-level access, and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.