The Quick Featured Images plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 13.7.2 via the qfi_set_thumbnail and qfi_delete_thumbnail AJAX actions due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Author-level access and above, to change or remove featured images of other user's posts.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
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