The vendor's description, reference included below: "Yoast SEO 11.6 also fixes a security issue regarding term pages in WordPress. Unfiltered code was allowed in some fields. This, however, does not pose a problem for single user sites. In specific cases, on multisite installs, this might become an issue because of the way user roles function."
First seen on: https://wpvulndb.com/vulnerabilities/9445