The Block Editor Gallery Slider plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the classic_gallery_slider_options() function in all versions up to, and including, 1.1.1. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update limited post meta for arbitrary posts.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
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