The Rank Math plugin through 1.0.40.2 for WordPress allows unauthenticated remote attackers to update arbitrary WordPress metadata, including the ability to escalate or revoke administrative privileges for existing users via the unsecured rankmath/v1/updateMeta REST API endpoint.

The Rank Math plugin through 1.0.40.2 for WordPress allows unauthenticated remote attackers to create new URIs (that redirect to an external web site) via the unsecured rankmath/v1/updateRedirection REST API endpoint. In other words, this is not an "Open Redirect" issue; instead, it allows the attacker to create a new URI with an arbitrary name (e.g., the /exampleredirect URI).