CVE-2024-9066 is a stored cross-site scripting vulnerability in the Marketing and SEO Booster WordPress plugin (versions up to 1.9.10). The flaw allows authenticated users with Author-level or higher permissions to upload SVG files containing malicious scripts due to improper sanitization and escaping of SVG input. These scripts execute in the context of users viewing the affected SVG files, potentially leading to session hijacking or other script-based attacks. The vulnerability has a CVSS 3.1 base score of 6.4 (medium severity), with network attack vector, low attack complexity, and no user interaction required beyond authentication.

Successful exploitation allows an authenticated user with Author-level or higher privileges to inject and store malicious scripts via SVG file uploads. These scripts execute in the browsers of users who view the SVG files, potentially compromising confidentiality and integrity of user sessions or data. The vulnerability does not impact availability. There are no known exploits in the wild currently.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict Author-level and higher user permissions to trusted users only and consider disabling SVG file uploads if possible. Monitor official channels for updates or patches from the dale668 plugin vendor.