CVE-2025-1665 is a stored cross-site scripting vulnerability in the themefusion Avada (Fusion) Builder WordPress plugin. The issue arises from insufficient input sanitization and output escaping of user-supplied attributes in several shortcodes, allowing authenticated users with contributor-level permissions or higher to inject arbitrary web scripts. These scripts execute in the context of any user viewing the compromised page, potentially leading to session hijacking or other script-based attacks. The vulnerability affects all versions up to and including 3.11.14 and has a CVSS 3.1 base score of 6.4 (medium severity).

An attacker with contributor-level access or higher can inject persistent malicious scripts into pages via plugin shortcodes. These scripts execute in the browsers of users who view the infected pages, potentially leading to information disclosure or session hijacking. The vulnerability does not impact availability and requires authenticated access, limiting the attack surface.

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 affected shortcodes to reduce risk.