CVE-2026-12536 is a stored cross-site scripting vulnerability in the Avada (Fusion) Builder plugin for WordPress. It affects all versions up to and including 3.15.5. The vulnerability exists due to improper neutralization of input during web page generation, specifically in the 'Module Title' parameter. Authenticated attackers with Contributor-level privileges or higher can inject arbitrary web scripts that execute in the context of users viewing the compromised pages. This can lead to partial confidentiality and integrity impact without availability loss, as indicated by the CVSS vector.

An attacker with Contributor-level or higher access can inject malicious scripts into pages via the 'Module Title' parameter. These scripts execute in the browsers of users who view the affected pages, potentially leading to information disclosure and modification of content within the affected site context. There is no direct impact on system availability. The CVSS score of 6.4 reflects a medium severity with network attack vector, low attack complexity, and no user interaction required.

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 limiting use of the 'Module Title' feature if possible. Monitor vendor communications for updates on patches or official mitigations.