The Essential Addons for Elementor plugin for WordPress contains a stored XSS vulnerability (CWE-79) in its Filterable Gallery widget due to improper neutralization of input during web page generation. Specifically, the Image URL parameter is not properly sanitized or escaped, allowing authenticated users with contributor or higher privileges to inject malicious scripts. These scripts execute in the context of users who visit the compromised pages. The vulnerability affects all plugin versions up to and including 5.9.4. The CVSS 3.1 base score is 5.4 (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N), reflecting network attack vector, low attack complexity, and limited privileges required.

An attacker with contributor-level or higher permissions can exploit this vulnerability to inject and store malicious scripts via the Image URL in the Filterable Gallery widget. These scripts execute in the browsers of users who view the affected pages, potentially leading to limited confidentiality and integrity impacts such as session hijacking or content manipulation. There is no impact on availability. No known exploits have been reported in the wild.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict contributor-level permissions to trusted users only and consider disabling or removing the Filterable Gallery widget if feasible. Monitor vendor channels for updates and apply any released patches promptly.