The Beaver Builder – WordPress Page Builder plugin suffers from a stored XSS vulnerability (CWE-79) via the link_target parameter due to inadequate sanitization and escaping. Authenticated users with contributor or higher roles can inject arbitrary scripts into pages, which execute on page load for any visitor. This vulnerability affects all versions up to and including 2.8.1.1. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, required privileges at the contributor level, no user interaction, and impacts on confidentiality and integrity but not availability.

An attacker with contributor or higher privileges can inject malicious scripts into pages that execute in the context of users visiting those pages. This can lead to unauthorized actions, data theft, or session hijacking affecting site visitors. The vulnerability does not impact availability. There are no known exploits in the wild at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access carefully and consider additional input validation or output escaping controls if possible. Monitor vendor channels for updates and apply patches promptly once released.