Huynh Pham Thanh Luc

The ARforms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Referer Header in all versions up to, and including, 7.2.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The arf save incomplete form data() AJAX handler is registered with wp ajax nopriv , meaning unauthenticated attackers can store a malicious payload by submitting a partial form entry with a forged Referer header, with no authentication required at any step.

The ARforms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'description' parameter in all versions up to, and including, 7.2.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The injected payload is deserialized via maybe unserialize() when an administrator views the affected entry; if the attacker's array contains a 'referrer' key, the attacker-controlled page url and http referrer values are used as-is and rendered unescaped into the admin entry detail view.

A reflected Cross-Site Scripting (XSS) issue exists in the 'afr.php' delivery script. An attacker can craft a specific URL containing an HTML payload in a parameter. If a logged-in administrator visits this URL, the browser executes the malicious scripts.