Thanks for your reply. Wordfence is reporting it as a new issue that affects the most recent version of GA Google Analytics:
The GA Google Analytics plugin for WordPress is vulnerable to Stored Cross-Site Scripting via several tracking fields in versions up to, and including, 20240308 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers with administrative privileges to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
But you’re right, the references in their notification refer to the 2021 issue so its possible that this is a false positive. In any case, you may want to look into it and see what you can do to get this resolved with the Wordfence people, as other users who also use Wordfence might also be concerned.