The ACF-Frontend-Display plugin through 2015-07-03 for WordPress has arbitrary file upload via an action=upload request to js/blueimp-jQuery-File-Upload-d45deb1/server/php/index.php.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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