CVE-2026-18405 is a stored Cross-Site Scripting vulnerability in the Jeg Kit for Elementor WordPress plugin, affecting all versions up to 3.2.16. The flaw is due to improper neutralization of input during web page generation, specifically via comment content. An unauthenticated attacker can inject malicious scripts into comments, which execute when a user views a page containing a legitimate Jeg Kit Countdown widget. This widget enqueues and initializes a frontend countdown script that processes the injected markup, leading to script execution in the victim's browser.

Successful exploitation allows an unauthenticated attacker to execute arbitrary scripts in the context of the victim's browser when they visit a page with the vulnerable widget and injected comments. This can lead to information disclosure and integrity loss of the affected web application. The CVSS 3.1 score is 7.2 (high), reflecting network attack vector, low attack complexity, no privileges required, no user interaction, and impact on confidentiality and integrity but not availability.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict or moderate comment submissions to prevent injection of malicious content, and consider disabling the Jeg Kit Countdown widget on posts where comments are enabled. Monitor vendor channels for updates and apply patches promptly once released.