Vlad Olaru

**Name of the Vulnerable Software and Affected Versions** WooCommerce Subscriptions versions prior to 9.1.0 **Description** Insufficient validation of user input before unserialization occurs on stores with High-Performance Order Storage enabled. This leads to a PHP Object Injection, which unauthenticated users can escalate to Remote Code Execution (RCE) by utilizing a gadget chain—a sequence of existing code fragments—found within the bundled dependencies. **Recommendations** Update WooCommerce Subscriptions to version 9.1.0 or later.