The CF7 Apps – Honeypot, Database, Redirection, Webhook, and Addons for Contact Form 7 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'wpcf7-form (CF7 form body; the [honeypot ...] tag value)' parameter in all versions up to, and including, 3.8.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with custom-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is only a meaningful privilege escalation on multisite installations or those with DISALLOW_UNFILTERED_HTML enabled, as Editor-level users on default single-site installs already possess the unfiltered_html capability.