EmbedPress < 4.6.8 - Unauthenticated YouTube API Quota Consumption and Database Bloating

Description

The plugin does not perform any capability or nonce check on an unauthenticated request that triggers a server-side, credential-bearing request to a third-party API and stores attacker-controlled cache entries, allowing unauthenticated attackers to consume the site owner's third-party API quota and write unbounded records into the site's database.