The Contact Form Builder by vcita plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'email' parameter in versions up to, and including, 4.9.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers with the editposts capability, such as contributors and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The Contact Form Builder by vcita plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 4.10.3. This is due to missing nonce validation on the lsparsevcitacallback function. This makes it possible for unauthenticated attackers to modify the plugin's settings and inject malicious JavaScript via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. While the Cross-Site Scripting issue was patched in version 4.10.1, the plugin is still technically vulnerable to Cross-Site Request Forgery since a capability check but no nonce check was added in 4.10.2.