The ElementsKit Elementor Addons plugin for WordPress suffers from a stored cross-site scripting vulnerability identified as CVE-2026-2600. This vulnerability arises from improper neutralization of input in the 'ekit_tab_title' parameter within the Simple Tab widget, allowing authenticated users with contributor-level privileges or higher to inject arbitrary web scripts. These scripts execute whenever a user accesses the compromised page, potentially leading to information disclosure or session hijacking. The issue is due to insufficient input sanitization and output escaping of user-supplied attributes. The vulnerability affects all plugin versions up to 3.7.9. No patch or official remediation has been published yet.

An attacker with contributor-level or higher access can exploit this vulnerability to inject malicious scripts into pages via the 'ekit_tab_title' parameter. These scripts execute in the context of users viewing the affected pages, potentially leading to information disclosure and limited integrity impacts. The vulnerability does not affect availability. The CVSS 3.1 base score is 6.4 (medium severity), reflecting network attack vector, low attack complexity, privileges required, no user interaction, and partial confidentiality and integrity impact. There are no known exploits in the wild currently.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict contributor-level access to trusted users only and consider disabling or limiting use of the vulnerable Simple Tab widget. Monitor vendor channels for updates and apply patches promptly once available.