The Image Optimizer, Resizer and CDN – Sirv plugin for WordPress is vulnerable to unauthorized plugin settings modification due to missing capability checks on the plugin functions in all versions up to, and including, 7.2.7. This makes it possible for authenticated attackers, with Subscriber-level access and above, to change the connected Sirv account to an attacker-controlled one.
https://plugins.trac.wordpress.org/browser/sirv/tags/7.2.6/sirv.php#L5338
https://plugins.trac.wordpress.org/browser/sirv/tags/7.2.6/sirv.php#L5197