The Ultimate Addons for Beaver Builder – Lite WordPress plugin suffers from a stored cross-site scripting vulnerability (CWE-79) in its Heading widget due to improper neutralization of input during web page generation. Authenticated users with contributor-level privileges or above can inject arbitrary JavaScript code that executes in the context of other users viewing the affected pages. This vulnerability affects all versions up to 1.5.7. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, low privileges required, no user interaction, and impacts on confidentiality and integrity with no impact on availability. No patch or official fix has been documented in the provided data.

Successful exploitation allows an authenticated contributor or higher to inject persistent malicious scripts into pages via the Heading widget. These scripts execute in the browsers of users who visit the infected pages, potentially leading to unauthorized actions such as session hijacking or data theft limited to the confidentiality and integrity impact scope. There is no reported impact on system availability. The vulnerability requires authenticated access with contributor-level privileges, limiting the attack surface to users with some level of trust on the WordPress site.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level access to trusted users only and consider disabling or removing the vulnerable Heading widget if feasible. Monitor vendor channels for updates or patches addressing this vulnerability.