The Essential Addons for Elementor plugin for WordPress suffers from a stored XSS vulnerability (CWE-79) due to improper neutralization of input in the countdown widget's message parameter. This allows authenticated users with contributor-level access or higher to inject arbitrary web scripts into pages. These scripts execute in the context of users who visit the compromised pages, potentially leading to session hijacking or other client-side impacts. The vulnerability affects all versions up to and including 5.9.11. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, required privileges at the contributor level, no user interaction, and impacts on confidentiality and integrity but not availability.

An attacker with contributor or higher privileges can exploit this vulnerability to inject persistent malicious scripts into pages via the countdown widget's message parameter. When other users access these pages, the injected scripts execute in their browsers, potentially compromising user sessions or data confidentiality and integrity. There is no indication of impact on system 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 access to trusted users only and consider disabling or avoiding use of the countdown widget's message parameter to reduce exposure. Monitor official channels from wpdevteam for updates or patches addressing this vulnerability.