The Cards for Beaver Builder plugin for WordPress suffers from a stored cross-site scripting vulnerability (CWE-79) due to improper neutralization of input during web page generation. Specifically, the BootstrapCard link attribute does not adequately sanitize or escape user input, enabling authenticated users with contributor or higher privileges to inject arbitrary JavaScript code. This code executes in the context of users visiting the compromised pages, potentially leading to information disclosure or session hijacking. The vulnerability affects all versions up to and including 1.1.2. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, required privileges, no user interaction, and impacts on confidentiality and integrity but not availability.

An attacker with contributor-level or higher permissions can inject persistent malicious scripts into pages via the vulnerable BootstrapCard link attribute. These scripts execute in the browsers of users who view the infected pages, potentially allowing theft of sensitive information or unauthorized actions within the context of the affected site. The vulnerability impacts confidentiality and integrity but does not affect availability. There are no reports of active exploitation in the wild.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict contributor-level permissions to trusted users only and consider disabling or removing the Cards for Beaver Builder plugin if possible. Monitor for updates from the plugin vendor or WordPress plugin repository to apply any forthcoming patches promptly.