The Supreme Modules Lite – Divi Theme, Extra Theme, and Divi 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 'button_one_id' parameter is not properly sanitized or escaped, allowing authenticated users with Contributor-level privileges or higher to inject malicious scripts. These scripts execute in the context of users who access the compromised pages, potentially leading to information disclosure or session hijacking. The vulnerability affects all versions up to 2.5.51 and has a CVSS 3.1 base score of 6.4 (medium severity). No patch or remediation details are currently available.

An attacker with Contributor-level or higher access can exploit this vulnerability to inject and store malicious scripts via the 'button_one_id' parameter. These scripts execute in the browsers of users who visit the affected pages, potentially leading to unauthorized actions such as session hijacking or data theft. The vulnerability does not impact availability but can compromise confidentiality and integrity of user sessions and data.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, limit Contributor-level access to trusted users only and consider disabling or restricting use of the affected plugin. Monitor official divisupreme or WordPress security advisories for updates and apply patches promptly once available.