CVE-2025-6756: Ultra Addons for Contact Form 7 <= 3.5.21 - Authenticated (Contributor+) Stored Cross-Site Scripting via UACF7_CUSTOM_FIELDS Shortcode
The Ultra Addons for Contact Form 7 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's UACF7CUSTOMFIELDS shortcode in all versions up to, and including, 3.5.21 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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-6756?
CVE-2025-6756 is a medium severity vulnerability due to stored cross-site scripting (XSS) risks.
How do I fix CVE-2025-6756?
To fix CVE-2025-6756, update the Ultra Addons for Contact Form 7 plugin to the latest version beyond 3.5.21.
What versions are affected by CVE-2025-6756?
CVE-2025-6756 affects all versions of the Ultra Addons for Contact Form 7 plugin up to and including 3.5.21.
What kind of vulnerability is CVE-2025-6756?
CVE-2025-6756 is a stored cross-site scripting (XSS) vulnerability.
Who is the vendor for CVE-2025-6756?
The vendor for CVE-2025-6756 is Ultra Addons, associated with the Contact Form 7 plugin for WordPress.