The Flexible Wishlist for WooCommerce plugin suffers from a stored XSS vulnerability (CWE-79) via the 'wishlist_name' parameter. Insufficient input sanitization and output escaping allow unauthenticated attackers to inject arbitrary JavaScript code that executes in the context of users visiting the injected pages. This vulnerability affects all plugin versions up to 1.2.25. The CVSS 3.1 base score is 7.2 (High), with network attack vector, low attack complexity, no privileges required, no user interaction, and impacts confidentiality and integrity with scope changed. No known exploits in the wild or patch links are currently documented.

Successful exploitation allows an unauthenticated attacker to execute arbitrary scripts in the browsers of users who access the injected wishlist pages. This can lead to theft of sensitive information, session hijacking, or other malicious actions affecting confidentiality and integrity. Availability is not impacted. The vulnerability affects all users of the plugin versions up to 1.2.25.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider disabling or removing the plugin or restricting access to affected functionality. Monitor vendor channels for updates and apply patches promptly once released.