The Royal Elementor Addons and Templates plugin for WordPress suffers from a stored cross-site scripting vulnerability (CWE-79) due to improper neutralization of input during web page generation. This flaw allows authenticated users with contributor or higher privileges to inject malicious scripts via widget container attributes that are not properly sanitized or escaped. These scripts execute in the context of any user who views the compromised page, potentially leading to session hijacking or other script-based attacks. The vulnerability affects all versions up to 1.3.971. The CVSS 3.1 base score is 6.4 (medium), reflecting network attack vector, low attack complexity, privileges required, no user interaction, and impacts on confidentiality and integrity but not availability.

An attacker with contributor-level or higher access can inject persistent malicious scripts into pages via the vulnerable plugin. These scripts execute in the browsers of users who visit the infected pages, potentially compromising user sessions or performing unauthorized actions within the context of the affected site. The impact is limited to confidentiality and integrity, with no direct availability impact. The vulnerability requires authenticated access, reducing the attack surface compared to unauthenticated vulnerabilities.

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. Consider removing or disabling the affected plugin if possible. Monitor for updates from the vendor or WordPress plugin repository to apply patches promptly once available.