The Elementor Addon Elements plugin for WordPress contains a stored XSS vulnerability due to improper neutralization of input in the 'eae_custom_overlay_switcher' attribute of the Thumbnail Slider widget. This allows authenticated attackers with contributor or higher privileges to inject arbitrary web scripts that execute in the context of users visiting the compromised pages. The vulnerability affects all versions up to and including 1.12.12. The CVSS 3.1 vector indicates network attack vector, low attack complexity, privileges required at the low level, no user interaction, and impacts confidentiality and integrity with no availability impact.

Successful exploitation allows an attacker with contributor-level access or higher to inject persistent malicious scripts into pages. These scripts execute in the browsers of users who visit the infected pages, potentially leading to theft of sensitive information, session hijacking, or other malicious actions impacting confidentiality and integrity. There is no direct impact on system availability. The vulnerability does not appear to be exploited in the wild as of the published date.

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 removing or disabling the vulnerable Thumbnail Slider widget. Monitor vendor channels for updates and apply any official patches promptly once available.