The EmbedPress WordPress plugin before 4.6.4 does not have proper authorization on a public review-loading action, allowing unauthenticated users to force the site to make repeated billable third-party API requests using the site's own configured API key, and to create an unbounded number of attacker-controlled rows in the database.

The EmbedPress WordPress plugin before 4.6.4 does not correctly restrict access to one of its Google Reviews REST routes to administrators, allowing any authenticated user with contributor-level access or above to read the site administrator's email address, a value WordPress core withholds from that role.

The EmbedPress WordPress plugin before 4.6.1 does not validate user-supplied URLs before making server-side requests through unauthenticated endpoints, allowing unauthenticated attackers to induce the site to send HTTP requests to internal hosts and services that WordPress core URL validation does not cover (a blind Server-Side Request Forgery).

Unauthenticated Sensitive Data Exposure in EmbedPress <= 4.5.2 versions.