YesWiki before 4.6.7 contains an unrestricted file upload vulnerability that allows authenticated admins to write remote files into the web-accessible files/ directory via Bazar CSV import preview. Attackers can import a CSV whose file or image field references a remote .php URL, which is saved without extension checks and executed as server-side code.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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