The Jupiter X Core plugin for WordPress suffers from a stored cross-site scripting vulnerability (CWE-79) due to improper neutralization of input during web page generation. Specifically, SVG file inclusion is not properly sanitized or escaped, enabling authenticated users with Contributor or higher privileges to inject arbitrary JavaScript code. This code executes in the context of users viewing pages with the malicious SVG, potentially leading to session hijacking or other script-based attacks. The vulnerability affects all versions up to and including 4.8.12. 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 with no availability impact.

An attacker with Contributor-level or higher access can inject persistent malicious scripts via SVG file uploads or inclusions. These scripts execute in the browsers of users viewing affected pages, potentially compromising user sessions or performing unauthorized actions within the context of the site. The impact is limited to confidentiality and integrity, with no direct availability impact. Since the vulnerability requires authenticated access, the risk is mitigated somewhat by the need for contributor privileges.

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 SVG file uploads or inclusions if possible. Monitor for plugin updates from artbees and apply them promptly once available.